Database Users

[Q] Editing Build.prop results in failure to boot [bricked]

As you may know, some Android games especially most Gameloft games are not compatible with the Kindle Fire. So in efforts to find a way to make certain Gameloft games to work such as Modern Combat 2 and Shrek Kart and others, I resorted to editing my build.prop in the systems folder to make my device compatible with the apps. So I copied the original build.prop file, renamed it, and saved it to my SD Card folder. I took the copy I made and I then replaced it with the build.prop from HTC Glacier. (I never knew what could possibly happen) So then to apply those settings you have to reboot the device. I rebooted the Kindle and now it won't boot up. It get's to the Kindle Fire screen when booting up but after several seconds it just shows a black screen. No physical damage has been incurred to it but I feel like my stupid mistake of modding the build.prop resulted in the Kindle Fire unable to boot up correctly. It also isn't recognized by the PC when I hook it up to a USB cable. So far I've found nothing that could help to solve this. I've seen a Factory Default Settings Cable which is a special cable to reverts the device to its factory default settings but I'm not too sure if that would work. I'm in desperate need of help as in I use my Kindle Fire for everyday work and play. Thanks.
EDIT: I've tried adb push and renaming and moving the build.prop into the /system/ but returns that it is a Read-File System Only. Also adb shell and su doesn't work as in it ends up with segmentation fault. I've tried to zergRush root it and permanently root it using KFU but it ends up with 'Cannot Access Package Manager. Is System running?' Also the mount -o rw,remount.....command doesn't work either as it says Permission Denied. All of this would be easy to accomplish if only it ADB allowed me to write onto the /system file.
EDIT**: The biggest issue I'm faced with is the permission settings that prevent my from editing anything. You cannot simply change it from RO to RW because apparently the ADB is not rooted. And I also can't root it because problems exist when accessing either Package Manager or Activity Manager. What I need is a way to access the /system files without a root (non-rooted). Either that or enable fastboot because I cannot access that either. On a reply on the second page is the resulting lines when changing bootmodes on the KFU.

Don't know how to fix your problem, but just wondering, did you just completely replace the kindle fire build.prop with the HTC glacier? Because you can't do that, it will, as you have learned, mess up your device.. Your supposed to edit the build.prop and just change a few things. Next time read up on the subject before deciding to mod the device you use everyday...

the cable you'r talking about is a "factory cable" it forces the kf to fastboot mode - it don't restore any settings !
you need fastboot mode to install fff (firefirefire - custom bootloader) and twrp (recovery)
do you allready have installed fff & twrp (or cwm) ?
if you have twrp installed and booted into then you have adb command available and can copy back the original build.prop

Did you remember to restore the read/write permissions to build.prop? It should be set to 644.

As already stated, your not supposed to replace the whole file, build.prop tells android which device you have, so now Android thought and configured itself to different hardware config. which is not available to it. Adb seems like the only option.

I should have really looked more into it before modifying the build.prop. I replaced the ENTIRE build prop with the build.prop of HTC Glacer. (I know, i know I was stupid) And referring to the factory cable, I don't think I'll resort to that: too time consuming. In regards to the last person that posted before me who said that my only option was ADB could you elaborate? Thanks for all your feedback.

gococogo321 said:
I should have really looked more into it before modifying the build.prop. I replaced the ENTIRE build prop with the build.prop of HTC Glacer. (I know, i know I was stupid) And referring to the factory cable, I don't think I'll resort to that: too time consuming. In regards to the last person that posted before me who said that my only option was ADB could you elaborate? Thanks for all your feedback.
Click to expand...
Click to collapse
Your going to have to use adb to basically remove the HTC Glacier build.prop and replace it with the original build.prop.
For example:
Adb remount <- allows you to mount system as rw
Adb pull /path-to-original/build.prop
Adb push build.prop /system
Adb shell chmod 644 /system/build.prop <- sets permissions to rwrr
Adb reboot
Sent from my Kindle Fire using xda premium

You dont have access to recovery? Either TWRP or CWM?

daggy1985 said:
Your going to have to use adb to basically remove the HTC Glacier build.prop and replace it with the original build.prop.
For example:
Adb remount <- allows you to mount system as rw
Adb pull /path-to-original/build.prop
Adb push build.prop /system
Adb shell chmod 644 /system/build.prop <- sets permissions to rwrr
Adb reboot
Sent from my Kindle Fire using xda premium
Click to expand...
Click to collapse
I tried doing that but it says something like Access Denied or Read-Only File System when i try to push the build.prop into it.

gococogo321 said:
I tried doing that but it says something like Access Denied or Read-Only File System when i try to push the build.prop into it.
Click to expand...
Click to collapse
Did you use the 'adb remount' command? Sometimes, when attempting to push a file to the system, I get the 'read-only file system' and I have to issue adb reboot followed by adb remount and then push the file again. It seems after a time the mount system as read write automatically goes back to read-only.
Sent from my ADR6400L using xda premium

Have you got TWRP or ClockworkMod?
Because you could flash a new rom then.

abd - root mode
Perhaps, running adb in root mode will
allow you to push the original build.prop
back. Then execute "adb remount / rw" to mount the
root directory as read/write. Hopefully you will be able to push
it then follow daggy1985's instructions.
* In Win 7, type "cmd " at the 'SEARCH/RUN' and hold
shift + ctrl while hitting 'Enter' to put yourself
in Admin mode which apparently makes adb work in root mode when you launch it.
* Xda-dev is the coolest site for Android that I have seen. Kudo's to everyone participating.

sum1nil said:
Perhaps, running adb in root mode will
allow you to push the original build.prop
back. Then execute "adb remount / rw" to mount the
root directory as read/write. Hopefully you will be able to push
it then follow daggy1985's instructions.
* In Win 7, type "cmd " at the 'SEARCH/RUN' and hold
shift + ctrl while hitting 'Enter' to put yourself
in Admin mode which apparently makes adb work in root mode when you launch it.
* Xda-dev is the coolest site for Android that I have seen. Kudo's to everyone participating.
Click to expand...
Click to collapse
Thanks but I have actually been running it from Administrator from the very beginning. I've used Kindle Fire Utility KFU and it says that ADB Server is Online and my Bootmode is 4000 but it says ADB root: No. And whenever I choose any bootmode whether it be Normal, Fastboot, or Recovery, it always shows this:
***********************************************
* Activating Normal (4000) *
***********************************************
Installing BurritoRoot, Courtesy of Jcase of TeamAndIRC!
1393 KB/s (1164225 bytes in 0.816s)
Error: Could not access the Package Manager. Is the system running?
Activating BurritoRoot...
Error type 2
android.util.AndroidException: Can't connect to activity manager; is the system
running?
Elevating the Shell...
* daemon not running. starting it now *
* daemon started successfully *
/data/local/tmp/BurritoRoot3.bin: permission denied
mount: Operation not permitted
mount: Operation not permitted
failed to copy 'files\rbfb' to '/system//rbfb': Read-only file system
Unable to chmod /system/rbfb: No such file or directory
Unable to chmod /system/rbfb: No such file or directory
mount: Operation not permitted
mount: Operation not permitted
***********************************************
* Root Activated *
***********************************************
The kindle is successfully running in root mode.
<idme> Invalid permission
reboot: Operation not permitted
Same goes for the Temp Burrito Root and installing FFF and TWRP. It always shows something about cannot access Package manager. I have no clue what the Package Manager even does but apparently I cannot find a solution to that.

I think you need to get a factory programming cable like we talked about on gtalk. I'm confident that will fix this.
Sent from my DROIDX using Tapatalk

I used android commander for windows, mounted system in TWRP and used android commander to copy a new working build.prop to the right place.
With a cable from my htc desire.

would make a little test:
issue "adb shell"
if you get a error message your up to a factory cable because the system shell is messed up and you have no possibility to get to fastboot mode to install fff & twrp
if you get a $ or # prompt you can resume and try "mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system" to mount system in read/write mode

daggy1985 said:
Your going to have to use adb to basically remove the HTC Glacier build.prop and replace it with the original build.prop.
For example:
Adb remount <- allows you to mount system as rw
Adb pull /path-to-original/build.prop
Adb push build.prop /system
Adb shell chmod 644 /system/build.prop <- sets permissions to rwrr
Adb reboot
Sent from my Kindle Fire using xda premium
Click to expand...
Click to collapse
hey, I've tried to remount my rooted galaxy y, fall in for same problem.but there show this message; "remount failed: Operation not permitted"
my device's usb debugging mode was off in last entire.
what I have to do now?

how did u edit build.prop in the first place if u don't have root and this might help
http://yaseminavcular.blogspot.com/2012/01/how-to-get-bricked-kindle-fire-back-to.html?m=1
Sent from my R800i using Tapatalk

Possible new way to ROOT

New possible root method on Thinkpad tablet forums, by OPDECIRKEL. He needs help testing it out.
look here and lets cross our fingers =D
http://www.thinkpadtabletforums.com...nt/yareftpt-yet-another-root-exploit-for-tpt/

opdecirkel released the exploit -> http://opdecirkel.wordpress.com/2012/03/18/yareftpt/

unfortunately, it doesn't work. =( can't execute "adb remount" when the script calls for it, but hopefully things will get ironed out soon.
***EDIT***
updated script worked!

-=HOLLYW00D=- said:
unfortunately, it doesn't work. =( can't execute "adb remount" when the script calls for it, but hopefully things will get ironed out soon.
Click to expand...
Click to collapse
Not sure if it can help you, but try checking the TPT forum thread again, there has been some advances and troubleshooting going on

Moved To General​
As the first post is just a link and contains no development, this has no place in this section​

updated -> http://opdecirkel.wordpress.com/2012/03/18/yareftpt/
Someone thinkpadtabletforum reported that it worked for him.

updated script worked for me! cwm installed fine as well!

I achieved root with the new method on OTA 2.5. Also installed CWM with no issues. Works great.
Sent from my PC36100 using Tapatalk

I can confirm it worked!
I had to update first because the "Disable Battery Discharge" option was not there. (I guess my Tablet stopped getting OTA updates since I was on ThinkPadTablet_A310_02_0024_0065_US... Also, you have to update one at a time, you can't go from 24_65 straight to 37_75. Also, I stopped at 39_86 since I was impatient.)
I like this once since we can see how it worked rather than blindly running some guys program (I never tried the first root.)

I can also confirm the new method to be working. Just rooted my 0089_WE TPT. Works like a charm

I am quoting the following post (i don't have privilege to post there): forum.xda-developers.com/showpost.php?p=23902281&postcount=64
daswahnsinn said:
I unrooted and then updated, now I can't root. I updated the SDK and made sure I have the proper drivers needed. So I take back my easy comment. I'll keep trying I might just manually push the files back.
Click to expand...
Click to collapse
How did it fail? At which stage and what error did you get?

Okay, I'll try and flash the oldest update zip, and it fails as it should, then I wipe the cache part, reboot, and I hit enter when I gets to the unlock screen then the CMD window closes.
EDIT: I spent a good hour or so combing through my PC and these forums and tried both methods a lot, and this one finally worked. It wouldn't let me get to the /cache/recovery/pwn/su part of the script. Thank you all for your support.

I have problems...
Hi all,
Apologizes for my english, too bad to discuss this kind of issues. Sorry in advance.
I had the "fantastic" idea to update the firmware some weeks ago, when I was SU. After this, I've lost most of capabilities!
I tried to follow the procedure, but I cannot reach 'root' in any case. I have version WE089. Downloaded US060, but there's only 065 for Western Europe. I got both, just in case..
Unfortunately, in the first step it failed I'm not able to update anything. The process crashes when is loading old firmware, either US060 or WE065.
I've realised that during the process I loose the USB link connection (when I reboot), and the system tries to install again and again the driver. If the TPT is running in recovery mode, it seems that is not connected via USB... If I have the tablet in "normal use", I see it through the Windows Desktop.
Other question: should I disconnect the Internet connection?
I guess other requirements are right (ADBD, debugging mode,...). It's really annoying, it took me a lot of hours and I haven't found any solution.
Can anybody help me? What I'm doing wrong?
Cheers!
jm
W7 64bits - TPT WE089

@jm
goto device manager. right click on Android device. reinstall device driver.
This worked for me in recovery when the device was not recognized.
Edit: look here: http://forum.xda-developers.com/showthread.php?t=1471106&page=2

What do you mean with loosing the connection? Is the adb driver installed correctly? Where did you get it from? Is it an genuine lenovo driver? If so, than you shouldn't worry!
Perhabs it's the MTP driver, that is missing when you boot into recovery? If it's the adb driver, than you should try jlove's method.
In addition I wanted to inform you, that the new method worked for me, too! Even with some complications... by this way, thanks again to opdecirkel!
Because the run.bat script did't worked correctly, I had to do it manually. So I put the "yareftpt" on C:\\, started cmd.exe, booted the TPT into recovery and changed the directory in cmd.exe with "cd.." to "cd yareftpt" ...followed the instructions with the update...
echo 4. Reboot in RECOVERY: (shutdown the tablet, then start it and press volume + few times until it starts in recovery)
echo 5. Go to apply update, select the update from the sdcard and try to apply it. It will fail, but that is OK.
echo 5. Then, go to 'WIPE CACHE PARTITION' and select it (navigate with volume buttons and select it with power button),
echo 6. When wipe cache complete, press (here) ^<ENTER^>.
and after that I copied the first line of the script into cmd and executed. I did it line after line, just to the next step. (dark green= copy line after line, paste and execute)
adb shell "/system/bin/mkdir /data/local/pwn"
adb shell "/system/bin/mkdir /data/local/pwn-bak"
adb shell "/system/bin/cat /system/etc/install-recovery.sh > /data/local/pwn-bak/install-recovery.sh.orig"
adb shell "/system/bin/mkdir /cache/recovery/pwn"
adb push su /cache/recovery/pwn
adb shell "/system/bin/rm /cache/recovery/log"
adb shell "/system/bin/ln -s /system/etc/install-recovery.sh /cache/recovery/log"
adb shell "echo \"/system/bin/chmod 777 /cache\" >> /tmp/recovery.log"
adb shell "echo \"/system/bin/mount -t ext4 /dev/block/mmcblk0p4 /cache\" >> /tmp/recovery.log"
adb shell "echo \"/system/bin/chmod 777 /cache\" >> /tmp/recovery.log"
adb shell "echo \"/system/bin/mount -oremount,rw -t ext4 /dev/block/mmcblk0p4 /cache\" >> /tmp/recovery.log"
adb shell "echo \"/system/bin/chmod 777 /cache\" >> /tmp/recovery.log"
adb shell "echo \"/system/bin/chmod 777 /cache/recovery\" >> /tmp/recovery.log"
adb shell "echo \"/system/bin/chown root /cache/recovery/pwn/su\" >> /tmp/recovery.log"
adb shell "echo \"/system/bin/chmod 4777 /cache/recovery/pwn/su\" >> /tmp/recovery.log"
echo 7. On the device, go to 'DISABLE BATTERY DISCHARGE' and select it. When complete press (here) ^<ENTER^>
pause
some of commands might cause failures, but don't worry and just go on
adb shell "/system/bin/rm /cache/recovery/log"
echo 8. On the device, select REBOOT. When startup COMPLETE press (here) ^<ENTER^>
pause
adb push Superuser.apk /data/local/pwn/Superuser.apk
adb push busybox /data/local/pwn/busybox
adb push su /data/local/pwn/su
adb push pwn-in.sh /data/local/pwn/pwn-in.sh
adb shell "/system/bin/chmod 777 /data/local/pwn/pwn-in.sh"
echo Your PC command prompt appears next. Do the following things:
echo 1. adb shell
echo when '$' (adb shell) appear, do:
echo 2. /cache/recovery/pwn/su
echo when '#' appears. You are root. run the following:
echo 3. /data/local/pwn/pwn-in.sh
now you should try if you have su, even if you don't see in your app list..
download root checker, install, open and try it!
You should have root right now.
In my case, i had root, but no CWM!
So I had to install in manually, but with root it should't be a problem. you only have to download the correct cwm version:
http://forum.xda-developers.com/showpost.php?p=21916505&postcount=71
then I installed it with the Android Terminal Emulator app, because the cmd.exe method did't worked for me. You should just follow the instructions:
or you can copy img file on /data/local/ folder of your tablet (with a file manager with root permissions)
launch "Android Terminal Emulator" application
and tape the instructions
su
mount -o rw,remount /system
echo "#!/system/bin/sh" > /system/etc/install-recovery.sh
dd if=/data/local/NameOfCWMFile.img of=/dev/block/mmcblk0p1
http://www.thinkpadtabletforums.com...nd-development/clockworkmod-recovery-for-tpt/
After a shutdown and reboot into recovery I had cwm! So I am able to do nandroid backups...
In this way, I would particularly like to thank to all devs that made the TPT root possible! Now i like my TPT 1000% more than before...e.g. no status-bar in lecture notes -> sooo great!!

I do get the following error maybe someone can help me out
[*]
[*]
[*]
/system/bin/mkdir: not found
/system/bin/mkdir: not found
cannot create /data/local/pwn-bak/install-recovery.sh.orig: directory nonexisten
t
/system/bin/mkdir: not found
699 KB/s (22364 bytes in 0.031s)
/system/bin/rm: not found
/system/bin/ln: not found
7. On the device, go to 'DISABLE BATTERY DISCHARGE' and select it. When complete
press (here) <ENTER>
Drücken Sie eine beliebige Taste . . .
it cant find the mkdir command very strange

I'm a little rusty, but are the / and \ facing the correct way? And are you in the correct directory? Not found usually means path is incorrect.

@rangercaptain
thats the commands from the root script. I didnt change them.
the commands are send over from adb shell and the tablet is in root directory i think.
When i go into shell and type in ls i get access denied error.

and you load the update zip and wiped cache before typing the commands, right? You have to do this every time you try to root...
Try to do it with another method. Don't do it directly trough adb shell...just type the shell commands in the cmd.exe
You just have to chance the directory in cmd, before executing the commands.
Then try not to input 'adb shell' before the shortened command, but the whole command as one line like:
adb shell "/system/bin/mkdir /data/local/pwn"
Perhabs it will work..?!?

@neos
yes i do the same procedure.
I also tried over cmd with adb shell "command" and also in shell.
Always the same error.
I looked into the system/bin directory and mkdir does have filesize of 0kb...

[Q]Nexus 4 system partition permission

Hi ,
I wanted to modify the build.prop on my nexus4 , and i requested r/w permissions , i was using es file explorer, and the only way to do this , was to remount the partition from R/O to R/W , then it let me modify the file , and change permissions on that file, but i forgot to re-mount the partition as R/O before rebooting my phone. now it wont boot up , and i dont know how to change the permissions back to R/O , or how to fix this issue.
Hope this makes any sense. Thanks

Ikran said:
Hi ,
I wanted to modify the build.prop on my nexus4 , and i requested r/w permissions , i was using es file explorer, and the only way to do this , was to remount the partition from R/O to R/W , then it let me modify the file , and change permissions on that file, but i forgot to re-mount the partition as R/O before rebooting my phone. now it wont boot up , and i dont know how to change the permissions back to R/O , or how to fix this issue.
Hope this makes any sense. Thanks
Click to expand...
Click to collapse
All the mount point are reset upon reboot, so it won't be affecting your system or whatsoever. However, the problem seems due to permission of your build.prop or it could be the settings that you added to the build.prop
If you have custom recovery installed, try Fix permissions. If it doesn't work, you can either re-flash the ROM or use adb to push back original build.prop into /system.

ksilver89 said:
All the mount point are reset upon reboot, so it won't be affecting your system or whatsoever. However, the problem seems due to permission of your build.prop or it could be the settings that you added to the build.prop
If you have custom recovery installed, try Fix permissions. If it doesn't work, you can either re-flash the ROM or use adb to push back original build.prop into /system.
Click to expand...
Click to collapse
i replaced( overwrite) the modified build.prop that i had on the phone with the original build.prop file, then rebooted the phone. and now it wont start up at all. i have a custom recovery from the nexus tool kit ( i think its cwm) . but that one works only if i can connect my phone to the pc , then boot in recovery mode, which i cant, since the phone wont start now. only recovery that i have now is that with a dead droid, which i can bypass and after that i got 4 options reboot , wipe or format, install files abd something and another option. i would gladly reflash my phone if you can tell me how

What modifications have you done to the build.prop?
Sent from my Nexus 4 using Tapatalk 4

Ikran said:
i replaced( overwrite) the modified build.prop that i had on the phone with the original build.prop file, then rebooted the phone. and now it wont start up at all. i have a custom recovery from the nexus tool kit ( i think its cwm) . but that one works only if i can connect my phone to the pc , then boot in recovery mode, which i cant, since the phone wont start now. only recovery that i have now is that with a dead droid, which i can bypass and after that i got 4 options reboot , wipe or format, install files abd something and another option. i would gladly reflash my phone if you can tell me how
Click to expand...
Click to collapse
No fix can be done without a PC now, unless you have a nandroid backup (clearly you don't have it right now).
Hold vol down + power key to enter bootloader mode. Connect the phone to your PC.
1. If your bootloader is locked, unlock the bootloader.
Code:
fastboot oem unlock
This is important, if you don't format the cache, all your data will be wiped upon reboot!
Code:
fastboot format cache
2. Download & flash cwm or twrp. Boot into recovery.
3. Use fix permissions.
OR
Mount system partition with the recovery interface. Then run this adb command on your PC.
Code:
adb shell chmod 644 /system/build.prop
adb reboot

andyabc said:
What modifications have you done to the build.prop?
Sent from my Nexus 4 using Tapatalk 4
Click to expand...
Click to collapse
i had this line there qemu.hw.mainkeys=1 , but i replaced the build.prop which had this line in, with the original build.prop, rebooted the phone , and now it wont boot up ( as i said, in doing this i have mounted the system partition from ES File Explorer from R/O to R/W, and forgot to turn them back to R/O before reboot) so my guess is that this happened because i didnt remounted back the partition with R/O permissions

Ikran said:
i had this line there qemu.hw.mainkeys=1 , but i replaced the build.prop which had this line in, with the original build.prop, rebooted the phone , and now it wont boot up ( as i said, in doing this i have mounted the system partition from ES File Explorer from R/O to R/W, and forgot to turn them back to R/O before reboot) so my guess is that this happened because i didnt remounted back the partition with R/O permissions
Click to expand...
Click to collapse
You don't really need that since you already have softkeys anyway.
The remount is not the case at all, the issue is either the permissions or the property itself.
Which recovery do you have?, if you have TWRP then you can fix it for sure with it's special feature.
Sent from my Nexus 4 using Tapatalk 4

occupied icinme
andyabc said:
You don't really need that since you already have softkeys anyway.
The remount is not the case at all, the issue is either the permissions or the property itself.
Which recovery do you have?, if you have TWRP then you can fix it for sure with it's special feature.
Sent from my Nexus 4 using Tapatalk 4
Click to expand...
Click to collapse
i think i have twrp but i could boot into it only when the phone was connected to the pc and from the nexus 4 tool kit

Ikran said:
i think i have twrp but i could boot into it only when the phone was connected to the pc and from the nexus 4 tool kit
Click to expand...
Click to collapse
Then you are just booting to it (not flashed) but anyway one you get on there you have to TWRP, Advanced and then Terminal command.
Go to the system folder and type the following commands IF you have the backup:
rm build.prop
mv build.prop.bak build.prop
Sent from my Nexus 4 using Tapatalk 4

ksilver89 said:
No fix can be done without a PC now, unless you have a nandroid backup (clearly you don't have it right now).
Hold vol down + power key to enter bootloader mode. Connect the phone to your PC.
1. If your bootloader is locked, unlock the bootloader.
Code:
fastboot oem unlock
This is important, if you don't format the cache, all your data will be wiped upon reboot!
Code:
fastboot format cache
2. Download & flash cwm or twrp. Boot into recovery.
3. Use fix permissions.
OR
Mount system partition with the recovery interface. Then run this adb command on your PC.
Code:
adb shell chmod 644 /system/build.prop
adb reboot
Click to expand...
Click to collapse
but how can i run these commands since my phone wont boot up so i can connect it to my pc ? and my bootloader is unlocked + rooted nexus

Ikran said:
but how can i run these commands since my phone wont boot up so i can connect it to my pc ? and my bootloader is unlocked + rooted nexus
Click to expand...
Click to collapse
Go to the bootloader, it has Fastboot from there.
EDIT: Oh you where talking about ADB, try using the method I posted on the previous page.
Sent from my Nexus 4 using Tapatalk 4

Ikran said:
but how can i run these commands since my phone wont boot up so i can connect it to my pc ? and my bootloader is unlocked + rooted nexus
Click to expand...
Click to collapse
From my understanding, this is your current situation and phone setup, correct me if I'm wrong.
Bootloader: Booted
Recovery: Stock/Original
ROM: Running, but now Bootloop <-- You are here.
Now, because it is now in the "ROM" states, the animation continues to play on and on, you need to turn OFF your phone, just hold the power button for more than 8 secs until the screen goes off.
IF holding the power button doesn't work, hold VOLUME DOWN + POWER key for more than 8 secs instead.
IF your phone already turned off, you can skip this step.
After you power down your phone, hold VOLUME DOWN + POWER key, your phone will enter "Bootloader" mode.
Bootloader: Fastboot <--- You are here.
Recovery: Stock/Original
ROM: Not Running
Now you can connect your phone to your PC with USB cables. Go to android-sdk\platform-tools folder, hold Shift + Right click and select Open command window here, enter this command:
Code:
fastboot devices
IF you don't see your device in the list, your PC will need "driver" to communicate with your phone, download it here: http://developer.android.com/sdk/win-usb.html
Open Device Manager, update the driver.
There, you need to get a custom recovery, get either TWRP or CWM, because you need them to run the SHELL command. Get them installed and boot into recovery.
Bootloader: Booted to recovery
Recovery: CWM/TWRP <--- You are here.
ROM: Not Running
In the command window, now type "adb shell" and enter.
Try the command posted by andyabc, reboot.

ksilver89 said:
From my understanding, this is your current situation and phone setup, correct me if I'm wrong.
Bootloader: Booted
Recovery: Stock/Original
ROM: Running, but now Bootloop <-- You are here.
Now, because it is now in the "ROM" states, the animation continues to play on and on, you need to turn OFF your phone, just hold the power button for more than 8 secs until the screen goes off.
IF holding the power button doesn't work, hold VOLUME DOWN + POWER key for more than 8 secs instead.
IF your phone already turned off, you can skip this step.
After you power down your phone, hold VOLUME DOWN + POWER key, your phone will enter "Bootloader" mode.
Bootloader: Fastboot <--- You are here.
Recovery: Stock/Original
ROM: Not Running
Now you can connect your phone to your PC with USB cables. Go to android-sdk\platform-tools folder, hold Shift + Right click and select Open command window here, enter this command:
Code:
fastboot devices
IF you don't see your device in the list, your PC will need "driver" to communicate with your phone, download it here: http://developer.android.com/sdk/win-usb.html
Open Device Manager, update the driver.
There, you need to get a custom recovery, get either TWRP or CWM, because you need them to run the SHELL command. Get them installed and boot into recovery.
Bootloader: Booted to recovery
Recovery: CWM/TWRP <--- You are here.
ROM: Not Running
In the command window, now type "adb shell" and enter.
Try the command posted by andyabc, reboot.
Click to expand...
Click to collapse
In TWRP there is a Terminal Command menu where you can do commands from so you can do modification's to the OS.
Sent from my Nexus 4 using Tapatalk 4

It is worth mentioning that the command "fastboot oem unlock" will actually erase all the personal data (should also include sdcard folder) and make it a blank phone! Use with cautions!

andyabc said:
In TWRP there is a Terminal Command menu where you can do commands from so you can do modification's to the OS.
Sent from my Nexus 4 using Tapatalk 4
Click to expand...
Click to collapse
so the phone when i turn it on, the logo from google appears and under that the unlocked lock , next, the 4 colored lines of nexus should appear . my phone doesnt gets to that, after the image of google disappears , its just a black screen , think is that bootloop you were saying.
BUT i managed to install cwm 6.0.3.5 on the phone and i am able to boot into recovery now . twrp wouldnt load for some reason, just frozen on the google logo when it was suppose to load .
so at this point i am here as you said:
Bootloader: Booted to recovery
Recovery: CWM/TWRP <--- You are here. ( cwm 6.0.3.5 )
ROM: Not Running
in cmd i did: adb devices >result:
C:\Program Files (x86)\WugFresh Development\data>adb devices
List of devices attached
00765833628b346b recovery
after that: adb shell > result :
C:\Program Files (x86)\WugFresh Development\data>adb shell
~ # adb shell chmod 644 /system/build.prop
adb shell chmod 644 /system/build.prop
/sbin/sh: adb: not found
~ # chmod 644 /system/build.prop
chmod 644 /system/build.prop
chmod: /system/build.prop: No such file or directory
~ # cd /system
cd /system
/system # chmod 644 build.prop
chmod 644 build.prop
chmod: build.prop: No such file or directory
/system # chmod 644 /system/build.prop
chmod 644 /system/build.prop
chmod: /system/build.prop: No such file or directory
/system # adb shell chmod 644 /system/build.prop
adb shell chmod 644 /system/build.prop
/sbin/sh: adb: not found

Ikran said:
after that: adb shell > result :
C:\Program Files (x86)\WugFresh Development\data>adb shell
~ # adb shell chmod 644 /system/build.prop
adb shell chmod 644 /system/build.prop
/sbin/sh: adb: not found
~ # chmod 644 /system/build.prop
chmod 644 /system/build.prop
chmod: /system/build.prop: No such file or directory
~ # cd /system
cd /system
/system # chmod 644 build.prop
chmod 644 build.prop
chmod: build.prop: No such file or directory
/system # chmod 644 /system/build.prop
chmod 644 /system/build.prop
chmod: /system/build.prop: No such file or directory
/system # adb shell chmod 644 /system/build.prop
adb shell chmod 644 /system/build.prop
/sbin/sh: adb: not found
Click to expand...
Click to collapse
Great, you're almost there. Now in the CWM, there is a menu item called "Mount and storage", you need to mount /system partition in order for the command to work.
Tips: If you already run "adb shell", you are already "inside" the shell, so you don't need to type "adb" anymore. Notice the #? Just use chmod directly.
Tips 2: If you successfully corrected the permission but it didn't work, you will have to replace the build.prop with your original one.

ksilver89 said:
Great, you're almost there. Now in the CWM, there is a menu item called "Mount and storage", you need to mount /system partition in order for the command to work.
Tips: If you already run "adb shell", you are already "inside" the shell, so you don't need to type "adb" anymore. Notice the #? Just use chmod directly.
Tips 2: If you successfully corrected the permission but it didn't work, you will have to replace the build.prop with your original one.
Click to expand...
Click to collapse
thanks it worked, i had to mount the /system partition for the shell command to work, the phone booted up now, and it works, but for some reason everything is wiped from the phone i had some backup , i will see if i can restore anything from it. if not c'est la vie.
Thanks again

Guys, I have a similar kind of issue,
After flashing a Custom ROM in my Nexus 4, my phone is stuck on a bootloop, \
I have tried flashing almost everything, but still the bootloop exists,
If someone is willing to help me,
Just reply to this my "Yes" and I shall elaborate my whole issue here,
Thank you.

Rockstar600 said:
Guys, I have a similar kind of issue,
After flashing a Custom ROM in my Nexus 4, my phone is stuck on a bootloop, \
I have tried flashing almost everything, but still the bootloop exists,
If someone is willing to help me,
Just reply to this my "Yes" and I shall elaborate my whole issue here,
Thank you.
Click to expand...
Click to collapse
Yes, maybe.

Nuu~ said:
Yes, maybe.
Click to expand...
Click to collapse
Okay,
Let me quote my problem,
I also posted it on MSkip's Toolkit thread,
I did search but wasn't able to find a proper solution,
I was on a 4.3, with latest TWRP installed,
I flashed a ROM that was 4.2.2 after I flashed the phone was not booting up, and was stuck on Google logo,
I did wipe in the TWRP and even re-installed the ROM, had the same issue again,
So, I thought to flash 4.2.2 Google Factory Image via this toolkit,
I downloaded the Factory Image from Google and placed it in the folder which says "Put factory image here"
Followed all the procedures, and flashed the 4.2.2 factory image in my phone,
Now the phone is stuck on the X logo,
I tried going into the stock recovery and did a factory reset, but again the same thing,
The phone isn't booting up,
Also one thing i noticed, while the phone is booting the "Google" logo stays around a minute, and then the X boot animation appears,
Any clue what to do??
I tried pushing the factory image via toolkit several times, but again I'm stuck at the same boot animation,
Please help me regarding this,
I'm at work, trying to search and find information as much as I can,
I can now boot on 4.2.2 but in settings the phone says that the base band is unknown, IMEI is gone,
And I cannot even see the internal storage when I connect my phone to PC.
Here is what I'm facing.
Also check this,
I got this error too, unable to post the image so posting the link http://imageshack.us/photo/my-images/9/jys1.jpg
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
If you need any other details, please just do ask me, I will try my best to answer you properly.
Thank you.

Is there a way to stop H91810p schedule update?

As title says... Just found out about H91810p will make the phone unrootable which is something im planning later on. Sadly the update is scheduled for next restart.
Anything i can do to prevent that?

TempezT said:
As title says... Just found out about H91810p will make the phone unrootable which is something im planning later on. Sadly the update is scheduled for next restart.
Anything i can do to prevent that?
Click to expand...
Click to collapse
if you're rooted, go to /cache and rename update.zip to something else. then create a zero length file using the name update.zip. lastly set the permissions on that file to read only

Here since your on TMO, I compiled this for a buddy of mine through various sources (links provided) on the whole procedure start to finish. Might as well paste it for ya. Props to all original authors, etc...
I just did this on mine, same model, on firmware 10j. If your not on that or i step one will be to flash to the appropriate version. I didnt include that in my notes as myself and my buddy were both on 10j. But theres plenty of threads for that. if your on that, continue on:
Also if you are already flashed and rooted, jump to step #8 for the info regarding OTAs...
====================================================
Specifically for T-Mobile LG V20 H918
Firmware(s) 10I & 10J
====================================================
BOOTLOADER
SOURCES:
*** https://forum.xda-developers.com/v20/how-to/guide-unlock-bootloader-t3488878
*** https://forum.xda-developers.com/v20/development/h918-recowvery-unlock-v20-root-shell-t3490594/page2
*** https://forum.xda-developers.com/showpost.php?p=69897433&postcount=1060
*** https://forum.xda-developers.com/pi...e-pixel-xl-t3466185/post69239012#post69239012
====================================================
Warning: This will delete all your data. You'll also see a large warning every time you turn on the device (attached), this disappears in less than a second.
*Turn on developer mode:
Settings -> About device -> Software info -> Build number. (tap 7 times until it's enabled)
*Turn on OEM unlock and USB debugging:
Settings -> Developer options -> OEM unlock & USB Debugging. (turn it on)
Don't ever turn OEM unlock or Developer options off when using a custom ROM or recovery. This could lose to loss of all your data.
*Install LG drivers
WIN:
http://tool.lime.gdms.lge.com/dn/downloader.dev?fileKey=UW00120120425
MAC:
http://tool.lime.gdms.lge.com/dn/downloader.dev?fileKey=UW00320110909
You will also need adb and fastboot. You can download them in a portable small form factor here:
http://forum.xda-developers.com/android/software/host-tools-t3402497
You may need to get an additional .dll for adb to work, if so you can pull it from the pixel add compilation here:
https://xenserver.underpants-gnomes.biz/~romracer/fastboot_adb_pixel.zip
*In Terminal navigate to ADB root:
Type
Code:
adb devices
and authorize your computer on the phone
Type
Code:
adb reboot bootloader
Type
Code:
fastboot devices
and make sure your phone shows up
Type
Code:
fastboot oem unlock
Type
Code:
fastboot getvar all
Should say (bootloader) unlocked:yes
Type
Code:
fastboot reboot
====================================================
TWRP & ROOT:
SOURCES:
http://www.droidviews.com/install-twrp-root-t-mobile-lg-v20/
https://forum.xda-developers.com/v20/how-to/instruction-to-root-h918-10i-t3536472
https://forum.xda-developers.com/v20/development/h918-recowvery-unlock-v20-root-shell-t3490594
https://build.nethunter.com/android-tools/dirtycow/arm64/
https://github.com/jcadduono/android_external_dirtycow#running
https://build.nethunter.com/test-builds/twrp/lge/twrp-3.0.2-1-h918.img
https://download.chainfire.eu/supersu
====================================================
*Prerequisites:
Your LG driver must be up to date. You can have problems with USB 3.1 if so grab latest drivers.
ADB installed, put all 4 recowvery files into the folder:
https://build.nethunter.com/android-tools/dirtycow/arm64/
Download the TWRP “twrp-3.0.2-1-h918” image:
https://build.nethunter.com/test-builds/twrp/lge/twrp-3.0.2-1-h918.img
Rename TWRP file to twrp.img and put it into internal storage (sdcard)
Download SuperSU:
https://download.chainfire.eu/supersu
Copy SuperSU onto external memory card (or keep in root of adb, and you could push it back, after formating).
You must be on a 100% stock ROM. Rooted or not.
USB Debugging & OEM unlock allowed in Developer Settings
Bootloader unlocked
Make sure all security/locks are off. No pins, fingerprint, etc…
Steps:
1. Plug your phone to your host computer. Make sure it's in MTP mode.
2. Open your command prompt:
Code:
cd\
cd (right click your mouse and paste the ADB platform-tools address, if using portable pack, where you put the adb folder)
Code:
adb devices
This will show your connected phone
3. Enter the following prompt: (you can simply highlight, copy, right click on command prompt and choose paste):
Code:
adb push dirtycow /data/local/tmp
adb push recowvery-applypatch /data/local/tmp
adb push recowvery-app_process64 /data/local/tmp
adb push recowvery-run-as /data/local/tmp
adb shell
cd /data/local/tmp
chmod 0777 *
./dirtycow /system/bin/applypatch recowvery-applypatch
* On ADB shell mode, you should see $ on the front. Wait for few…
Code:
./dirtycow /system/bin/app_process64 recowvery-app_process64
* Your phone screen may look weird. Wait for another few minutes. Once finished exit.
Code:
exit
4. Type:
Code:
adb logcat -s recowvery
You should see a lot of lines comes across your screen.
Once you see the ASCII box with the message about giving jcadduomo a hug you can press CTRL+C to exit logcat.
Reboot to the stock recovery:
Code:
adb shell reboot recovery
Restart a session:
Code:
adb shell
You will see a $ sign. Now to check…
Code:
getenforce
It should show Permissive. Thanks Dirty COW!!!
5. Temp Root. Lets patch the boot image:
Code:
cd /data/local/tmp
./dirtycow /system/bin/run-as recowvery-run-as
run-as exec ./recowvery-applypatch boot
Lets run as root
Code:
run-as su
You should have a #, indicating you have root. Ahh my little nix…
6. Flash TWRP
Code:
dd if=/sdcard/twrp.img of=/dev/block/bootdevice/by-name/recovery
exit
reboot recovery
The phone should have flashed TWRP and rebooted into recovery.
7. TWRP:
In TWRP swipe to allow modifications. Or TWRP will be replaced next boot!
To disable any encryption perform the factory reset, and the Format Data options.
Install SuperSU from the external SD location.
If you didn’t do a full wipe and reset, you probably want to wipe cache and dalvik.
Reboot to system.
8. Stop them OTA updates!!!
====================================================
https://forum.xda-developers.com/showpost.php?p=72463487&postcount=4237
https://forum.xda-developers.com/showpost.php?p=70795926&postcount=5
====================================================
Open up your dialer interface and type in 277634#*#
This will bring up a hidden menu and then select Wi-Fi test and then select OTA then select disable.
After that you will have to kill the hidden menu and you shouldn't be seeing the annoying OTA icon in your status bar anymore.
In file manager (root browser):
Rename otacerts.zip in /system/etc/security to otacerts.bak.
The full update is found in the cache partition called update.zip.
Move (or delete) the update.zip file from /cache directory (I put it on the sd card).
** dimm0k's method there seems to achieve a similar result, cant hurt to add the step of creating a zero length file after deleting/moving update.zip. I hadnt seen it, thus never did that but I havent had any OTA activity in a few days on mine.
Also in titanium backup (buy it already if you haven’t lol), freeze:
FOTA Update 7.0
Update Center 5.30.12
(I also disabled the com.lge.updatecenter.xxx overlay and themes, cuz whatever... lol)
Reboot and swipe away the notification if its still there. Should have stopped by this point.
======================
There ya go, good luck!

Damn I dont have a computer in hand. Guess i have to wait until im back home in October. Cross fingers this thing don't restart cause that freaking patch is already scheduled.

MDMAchine said:
Here since your on TMO, I compiled this for a buddy of mine through various sources (links provided) on the whole procedure start to finish. Might as well paste it for ya. Props to all original authors, etc...
I just did this on mine, same model, on firmware 10j. If your not on that or i step one will be to flash to the appropriate version. I didnt include that in my notes as myself and my buddy were both on 10j. But theres plenty of threads for that. if your on that, continue on:
Also if you are already flashed and rooted, jump to step #8 for the info regarding OTAs...
====================================================
Specifically for T-Mobile LG V20 H918
Firmware(s) 10I & 10J
====================================================
BOOTLOADER
SOURCES:
*** https://forum.xda-developers.com/v20/how-to/guide-unlock-bootloader-t3488878
*** https://forum.xda-developers.com/v20/development/h918-recowvery-unlock-v20-root-shell-t3490594/page2
*** https://forum.xda-developers.com/showpost.php?p=69897433&postcount=1060
*** https://forum.xda-developers.com/pi...e-pixel-xl-t3466185/post69239012#post69239012
====================================================
Warning: This will delete all your data. You'll also see a large warning every time you turn on the device (attached), this disappears in less than a second.
*Turn on developer mode:
Settings -> About device -> Software info -> Build number. (tap 7 times until it's enabled)
*Turn on OEM unlock and USB debugging:
Settings -> Developer options -> OEM unlock & USB Debugging. (turn it on)
Don't ever turn OEM unlock or Developer options off when using a custom ROM or recovery. This could lose to loss of all your data.
*Install LG drivers
WIN:
http://tool.lime.gdms.lge.com/dn/downloader.dev?fileKey=UW00120120425
MAC:
http://tool.lime.gdms.lge.com/dn/downloader.dev?fileKey=UW00320110909
You will also need adb and fastboot. You can download them in a portable small form factor here:
http://forum.xda-developers.com/android/software/host-tools-t3402497
You may need to get an additional .dll for adb to work, if so you can pull it from the pixel add compilation here:
https://xenserver.underpants-gnomes.biz/~romracer/fastboot_adb_pixel.zip
*In Terminal navigate to ADB root:
Type
Code:
adb devices
and authorize your computer on the phone
Type
Code:
adb reboot bootloader
Type
Code:
fastboot devices
and make sure your phone shows up
Type
Code:
fastboot oem unlock
Type
Code:
fastboot getvar all
Should say (bootloader) unlocked:yes
Type
Code:
fastboot reboot
====================================================
TWRP & ROOT:
SOURCES:
http://www.droidviews.com/install-twrp-root-t-mobile-lg-v20/
https://forum.xda-developers.com/v20/how-to/instruction-to-root-h918-10i-t3536472
https://forum.xda-developers.com/v20/development/h918-recowvery-unlock-v20-root-shell-t3490594
https://build.nethunter.com/android-tools/dirtycow/arm64/
https://github.com/jcadduono/android_external_dirtycow#running
https://build.nethunter.com/test-builds/twrp/lge/twrp-3.0.2-1-h918.img
https://download.chainfire.eu/supersu
====================================================
*Prerequisites:
Your LG driver must be up to date. You can have problems with USB 3.1 if so grab latest drivers.
ADB installed, put all 4 recowvery files into the folder:
https://build.nethunter.com/android-tools/dirtycow/arm64/
Download the TWRP “twrp-3.0.2-1-h918” image:
https://build.nethunter.com/test-builds/twrp/lge/twrp-3.0.2-1-h918.img
Rename TWRP file to twrp.img and put it into internal storage (sdcard)
Download SuperSU:
https://download.chainfire.eu/supersu
Copy SuperSU onto external memory card (or keep in root of adb, and you could push it back, after formating).
You must be on a 100% stock ROM. Rooted or not.
USB Debugging & OEM unlock allowed in Developer Settings
Bootloader unlocked
Make sure all security/locks are off. No pins, fingerprint, etc…
Steps:
1. Plug your phone to your host computer. Make sure it's in MTP mode.
2. Open your command prompt:
Code:
cd\
cd (right click your mouse and paste the ADB platform-tools address, if using portable pack, where you put the adb folder)
Code:
adb devices
This will show your connected phone
3. Enter the following prompt: (you can simply highlight, copy, right click on command prompt and choose paste):
Code:
adb push dirtycow /data/local/tmp
adb push recowvery-applypatch /data/local/tmp
adb push recowvery-app_process64 /data/local/tmp
adb push recowvery-run-as /data/local/tmp
adb shell
cd /data/local/tmp
chmod 0777 *
./dirtycow /system/bin/applypatch recowvery-applypatch
* On ADB shell mode, you should see $ on the front. Wait for few…
Code:
./dirtycow /system/bin/app_process64 recowvery-app_process64
* Your phone screen may look weird. Wait for another few minutes. Once finished exit.
Code:
exit
4. Type:
Code:
adb logcat -s recowvery
You should see a lot of lines comes across your screen.
Once you see the ASCII box with the message about giving jcadduomo a hug you can press CTRL+C to exit logcat.
Reboot to the stock recovery:
Code:
adb shell reboot recovery
Restart a session:
Code:
adb shell
You will see a $ sign. Now to check…
Code:
getenforce
It should show Permissive. Thanks Dirty COW!!!
5. Temp Root. Lets patch the boot image:
Code:
cd /data/local/tmp
./dirtycow /system/bin/run-as recowvery-run-as
run-as exec ./recowvery-applypatch boot
Lets run as root
Code:
run-as su
You should have a #, indicating you have root. Ahh my little nix…
6. Flash TWRP
Code:
dd if=/sdcard/twrp.img of=/dev/block/bootdevice/by-name/recovery
exit
reboot recovery
The phone should have flashed TWRP and rebooted into recovery.
7. TWRP:
In TWRP swipe to allow modifications. Or TWRP will be replaced next boot!
To disable any encryption perform the factory reset, and the Format Data options.
Install SuperSU from the external SD location.
If you didn’t do a full wipe and reset, you probably want to wipe cache and dalvik.
Reboot to system.
8. Stop them OTA updates!!!
====================================================
https://forum.xda-developers.com/showpost.php?p=72463487&postcount=4237
https://forum.xda-developers.com/showpost.php?p=70795926&postcount=5
====================================================
Open up your dialer interface and type in 277634#*#
This will bring up a hidden menu and then select Wi-Fi test and then select OTA then select disable.
After that you will have to kill the hidden menu and you shouldn't be seeing the annoying OTA icon in your status bar anymore.
In file manager (root browser):
Rename otacerts.zip in /system/etc/security to otacerts.bak.
The full update is found in the cache partition called update.zip.
Move (or delete) the update.zip file from /cache directory (I put it on the sd card).
** dimm0k's method there seems to achieve a similar result, cant hurt to add the step of creating a zero length file after deleting/moving update.zip. I hadnt seen it, thus never did that but I havent had any OTA activity in a few days on mine.
Also in titanium backup (buy it already if you haven’t lol), freeze:
FOTA Update 7.0
Update Center 5.30.12
(I also disabled the com.lge.updatecenter.xxx overlay and themes, cuz whatever... lol)
Reboot and swipe away the notification if its still there. Should have stopped by this point.
======================
There ya go, good luck!
Click to expand...
Click to collapse
Okay someone in my base lend his laptop but its low end(sony viao core2 duo) dunno how well this work for flashing purposes, also I wanted to point before doing the process that my phone was unlocked permanently by tmobile unlock app and wanted to know if this can affect the unlocking or any other function of my v20.

Following those instructions to root will not gid rid of your carrier unlock.

You might be able to go to Settings>>Storage and delete Cached data.

Zacharee1 said:
You might be able to go to Settings>>Storage and delete Cached data.
Click to expand...
Click to collapse
Thank you! Now my other concern is that Im paying Jump! and root would void the warranty so I dont know if I should go ahead and do it regardless cause that silly update is already scheduled.

TempezT said:
Thank you! Now my other concern is that Im paying Jump! and root would void the warranty so I dont know if I should go ahead and do it regardless cause that silly update is already scheduled.
Click to expand...
Click to collapse
You can always restore to stock with the H918. Backup and root.

Zacharee1 said:
You can always restore to stock with the H918. Backup and root.
Click to expand...
Click to collapse
Thanks!
The issue Im having now is that I cant find how to root H91810k which is the current version my phone has besides the schedule update. Any info on that?

You have to find the KDZ for 10d and flash it with LGUP. Then you can use EasyRecowvery to root.
Flashing KDZs will wipe your data, so use LG Bridge to make a backup.

MDMAchine said:
Here since your on TMO, I compiled this for a buddy of mine through various sources (links provided) on the whole procedure start to finish. Might as well paste it for ya. Props to all original authors, etc...
I just did this on mine, same model, on firmware 10j. If your not on that or i step one will be to flash to the appropriate version. I didnt include that in my notes as myself and my buddy were both on 10j. But theres plenty of threads for that. if your on that, continue on.......
Click to expand...
Click to collapse
This is awesome! Thank you!!! You may want to make this its own post it's so helpful. Thanks again!!!!!!!!!

wewantutopia said:
This is awesome! Thank you!!! You may want to make this its own post it's so helpful. Thanks again!!!!!!!!!
Click to expand...
Click to collapse
No problem! Glad it helped, I will probably update the post a bit, and then I'll re-post it to its own thread in a few days. As I noticed this section is a bit disorganized...

MDMAchine said:
8. Stop them OTA updates!!!
====================================================
https://forum.xda-developers.com/showpost.php?p=72463487&postcount=4237
https://forum.xda-developers.com/showpost.php?p=70795926&postcount=5
====================================================
Open up your dialer interface and type in 277634#*#
This will bring up a hidden menu and then select Wi-Fi test and then select OTA then select disable.
After that you will have to kill the hidden menu and you shouldn't be seeing the annoying OTA icon in your status bar anymore.
In file manager (root browser):
Rename otacerts.zip in /system/etc/security to otacerts.bak.
The full update is found in the cache partition called update.zip.
Move (or delete) the update.zip file from /cache directory (I put it on the sd card).
** dimm0k's method there seems to achieve a similar result, cant hurt to add the step of creating a zero length file after deleting/moving update.zip. I hadnt seen it, thus never did that but I havent had any OTA activity in a few days on mine.
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Click to collapse
just wanted to add that SOMETIMES the update.zip is not in /cache. had this happen to me when I had the LGV10 and it just happened to me now. I had recently wiped my device to start from scratch and after initially setting up my device I got the update icon and indeed /cache/update.zip existed. a few reboots later for various reasons the update icon/notification disappeared, as did /cache/update.zip. I thought I was in the clear until last night when I got the update icon/notification again, but this time it was not in /cache. it somehow changed to /data/data/com.google.android.gms/app_download. so if you can't find it in /cache, look there!

[HELP] A3 2017 SM-A320FL Broken Screen Data recovery

Current status
Screen broken: YES
Screen is black: YES
Touch broken: YES
USB Debugging enabled: NO
OEM Unlock: NO
Phone is locked with PIN: YES
Phone has stock firmware, recovery and bootloader: YES but I don't know which version of Android is installed
External SD Card working: YES
Hardware keys working: YES
Can go to recovery mode: YES
Can go to bootloader mode: YES
Can boot it up normal: YES
Samsung Drivers installed: YES
Computer recognizes the phone: YES but no files are displayed because it is locked with a PIN
KIES recognizes the phone: NO it tries to connect and timeout after a few minutes probably because it is locked with a PIN
ODIN recognizes the phone: YES but cannot flash TWRP because it is not OEM unlocked
Can be unlocked via Google or Samsung account: NO because it doesn't have 3G or WiFi enabled so no internet connection
Did I use various specialized data recovery software? YES but none of them worked​
My idea to recover the data
1. Find a way to enable the USB Debugging setting from "outside".
2. Use a remote control software like Vysor to unlock it with the PIN and do whatever else is needed in order to install TWRP or root the phone.
3. Once we have mounted /system and /data partitions pull out the data via ADB.​
What I have done so far
1. I created an Update.zip file with the following content and structure:​META-INF​com​google​android​updater-script​updater-script contains the following commands:​
Code:
#!/sbin/sh
mount /system
mount /data
mount -o rw,remount /system /system
mount -o rw,remount / /
echo "persist.service.adb.enable=1" >> default.prop
echo "persist.service.debuggable=1" >> default.prop
echo "persist.sys.usb.config=mtp,adb" >> default.prop
echo "" >> default.prop
echo "persist.service.adb.enable=1" >> /system/build.prop
echo "persist.service.debuggable=1" >> /system/build.prop
echo "persist.sys.usb.config=mtp,adb" >> /system/build.prop
echo "" >> /system/build.prop
echo "[I]<my computer ADB public key>[/I]" >> /data/misc/adb/adb_keys
umount /system
umount /data
exit 0
[I]<a blank line>[/I]
2. I signed the zip file by following the procedure found here.​3. I formatted a 2GB SD Card as FAT32 and copied the signed Update.zip file to the root folder of the card.​4. I put the phone in recovery mode.​5. According to this video here I pressed the volume down button 3 times and then I pressed the power button in order to get into the "Apply update from SD card" option.​6. Assuming that the Update.zip file was the only option I pressed the power button in order to apply the update.​7. I waited about 4 minutes just to be sure that the file was applied. The phone did nothing which is probably normal. Having similar experiences by other phones, once the update is applied the phone returns to the initial recovery screen with the "Reboot system now" option selected. Having that in mind I pressed the power button once more and the phone rebooted into normal mode. I know that because I saw it in the computer. However the USB debugging option was NOT enabled.​8. I examined the SD Card and I found out that the following directories were created automatically:​.android_secure
Android
LOST.DIR​
Where am I stuck
I suspect that when I enter the "Apply update from SD card" option the directories appearing first in the list and I need to press the volume down button several times in order to select the Update.zip file to apply. I tried various combinations but I didn't manage to make it to work. Moreover, there is the possibility that the script don't run because of an error or probably there is a confirmation dialog somewhere in the middle. The phone isn't mine, I own an LG, so I have no experience with Samsung phones and their behavior in the stock recovery.​
What kind of help I need
I need someone with the same phone or one Samsung with the same stock recovery as this one to perform the following procedure:​1. Turn off the USB Debugging option in the developer settings in their phone.​2. Copy the attached update.zip file to the external SD Card and apply it via the recovery menu.​3. Provide step by step instructions for blind people on the actions they did in order to apply the update. For example, press volume down 3 times, power button 1 time, etc.​4. Provide feedback on any errors of the update or if the script run OK and the USB Debugging option was enabled.​
Things to consider
Right now the attached zip file contains my computer's ADB public key. That means that even if the USB debugging option gets enabled when the phone is connected to the computer it will still ask for confirmation in order to accept the computer as a debugging target. The ideal solution here is to replace my key with theirs computer key. It is located in the "C:\Users\<username>\.android\adbkey.pub" file. However, if they change the key in the update.zip file then the file needs to be signed again (I think). In order to do that you need to delete the CERT.RSA, CERT.SF and MANIFEST.MF from the META-INF directory and then re-zip and sign the new zip file as explained here.​
Thank you very much to took the time to read this message. Any help and/or ideas in order to overcome this issue will be highly appreciated.

Hi. I'm sorry to say that you won't be able to flash anything in stock recovery. It does crc check and has to be signed with samsung unique keys, so you can't even modify an official ota.zip signed with that key and make it pass.
Even If you would get the OEM unlock enabled and TWRP on it somehow, it would still not be able to mount /data because of the forced encryption, so you would have to flash the no verity/no encryption zip and format data anyway, just to mount it. in TWRP.

tys0n said:
Hi. I'm sorry to say that you won't be able to flash anything in stock recovery. It does crc check and has to be signed with samsung unique keys, so you can't even modify an official ota.zip signed with that key and make it pass.
Even If you would get the OEM unlock enabled and TWRP on it somehow, it would still not be able to mount /data because of the forced encryption, so you would have to flash the no verity/no encryption zip and format data anyway, just to mount it. in TWRP.
Click to expand...
Click to collapse
Hi tys0n
Thank you very much for your answer. It seems that you are quite right.
I am gonna try some other hardware solution via an OTG, HDMI etc.

If you can access to OS and have BLACK BROKEN SCREEN,
I suggest you need some mircousb-to-hdmi cable and micousb-to-mouse
and then try to grab as much file as you can to MicroSD Card
Hope this help you!
If this help you press Thanks button!