relocked bootloader, gboard not available - Huawei Mediapad M3 Questions & Answers

Well to make a long story short, I tried to root, twrp not working so I relocked bootloader. Stuck in boot for a long time, after many re starts, finally restarted from erestore (can't remember how I finally did it) In system restore it says that serious problem in partition and to restore to factory image. I attempt to do that and it says "failed" When reboot opens and I get access to home screen, now I cant type anything, voice to text come up instead. There is no gboard installed. How do I get keyboard back when I cant install my google account?
Thanks for any help
Please give step by step instructions as I don't want to mess it up worse.

mitch_m2017 said:
Well to make a long story short, I tried to root, twrp not working so I relocked bootloader. Stuck in boot for a long time, after many re starts, finally restarted from erestore (can't remember how I finally did it) In system restore it says that serious problem in partition and to restore to factory image. I attempt to do that and it says "failed" When reboot opens and I get access to home screen, now I cant type anything, voice to text come up instead. There is no gboard installed. How do I get keyboard back when I cant install my google account?
Thanks for any help
Please give step by step instructions as I don't want to mess it up worse.
Click to expand...
Click to collapse
i went to apkmirrow and downloaded swipe keyboard to my pc, then copied it onto the tablet. from there you should be able to install it and you will have a keyboard that works.

tensux said:
i went to apkmirrow and downloaded swipe keyboard to my pc, then copied it onto the tablet. from there you should be able to install it and you will have a keyboard that works.
Click to expand...
Click to collapse
Thank you. It worked. And thanks for the link, didn't know about that one

Related

I think I bricked my nexus (my fault) please help!

Hello all,
I think I may have bricked my nexus one. It is completely my fault for attempting things that I knew little about, so flame away But after the flaming, if anyone is willing to help I would be sooooo thankfull...
I successfully rooted my phone following the instructions on this page: (all links edited with a double asterisk as I don't believe I can post links)
h**p://theunlockr.com/2010/01/02/how-to-root-the-nexus-one/
Then successfully installed cyanogenmod (which is awesome!) following this page:
h**p://theunlockr.com/2010/01/08/how-to-load-a-custom-rom-on-the-nexus-one/
All was well, I even got the modaco desire rom up and running, and was happily switching back and forth using the recovery screen. I had nand backups for specific setups, etc.
Then I decided it would be good to know how to go back to stock, and found this page:
h**p://**w.androidspin.com/2010/05/06/guide-unrooting-your-nexus-one-its-like-it-never-happened-almost/
I followed the instructions to the letter (I think) except for erasing userdata (it said "failed: remote not allowed"). I thought that things would be ok, since I'd recently wiped, so I followed the page till the end.
The phone rebooted, and I got the original nexus boot animation - but it's in an endless loop! What's worse, it that now when I try to go to the bootloader or recovery mode, I get the exclamation triangle with the little android.
Is there any way through a command prompt (or other method) that I can fix this? I tried to re-flash the RA recovery image through the command prompt, but the response was, "waiting for device."
ANYTHING that anyone can suggest to help, I would be so thankful! I've been loving the nexus, and hate to think that I crippled it
Thanks in advance,
Randy
I doubt its bricked.
Noticed you didnt mention that fast boot doesnt work? (power button+trackball) try it.
Once you get to fastboot you can flash any ROM back. (fastboot flash **** commands from a command shell)
Did you ever perform a Nand Backup from Recovery?
It's not bricked, the only way to brick is to interrupt power when flashing a Radio image
Connect phone to PC. Open command prompt.
adb reboot recovery
Wipe, reflash.
So far, nobody has managed to brick a Nexus. There is no way as the fastboot mode can restore the whole phone and can't be messed with. Make sure you have the latest version of the SDK with correct USB drivers and fastboot. Then try and reflash the recovery image.
-------------------------------------
Sent from my Nexus One
nexus5894 said:
So far, nobody has managed to brick a Nexus. There is no way as the fastboot mode can restore the whole phone and can't be messed with. Make sure you have the latest version of the SDK with correct USB drivers and fastboot. Then try and reflash the recovery image.
-------------------------------------
Sent from my Nexus One
Click to expand...
Click to collapse
Actually...
http://forum.xda-developers.com/showpost.php?p=6320068&postcount=404
Paul22000 said:
Actually...
http://forum.xda-developers.com/showpost.php?p=6320068&postcount=404
Click to expand...
Click to collapse
............................
It worked!!!!!
It worked!!
britoso, thank you soooooo much! The only way that I knew to get into bootloader/recovery was via power button/volume down, but power/trackball brought up the bootloader screen, and I clicked on fastboot. I was able to flash the RA recover image through the command terminal via fastboot, then able to get into recovery. I had cyan and modaco sense on the sd, and was able to flash one of them on.
​
I never thought I'd be so happy to see "quietly brilliant"!!! I WILL buy you a beer, a case in fact as soon as money clears my paypal account.
I have learned my lesson, research research research. (I did do some, but not enough to feel comfortable with what I was doing - hence my cry for help!)
Other than the phone and OS itself, the thing I like most about the nexus is the fact that one CAN root, and then customize (sold a Telus moto droid because I could not do that very thing).
I digress... thanks again so much!
And Paul, thanks for your sense ROM; I've had HTC phones from the Touch to the the diamond to the Hero, and missed the UI!
Randy Malkoski said:
It worked!!
britoso, thank you soooooo much! The only way that I knew to get into bootloader/recovery was via power button/volume down, but power/trackball brought up the bootloader screen, and I clicked on fastboot. I was able to flash the RA recover image through the command terminal via fastboot, then able to get into recovery. I had cyan and modaco sense on the sd, and was able to flash one of them on.
​
I never thought I'd be so happy to see "quietly brilliant"!!! I WILL buy you a beer, a case in fact as soon as money clears my paypal account.
I have learned my lesson, research research research. (I did do some, but not enough to feel comfortable with what I was doing - hence my cry for help!)
Other than the phone and OS itself, the thing I like most about the nexus is the fact that one CAN root, and then customize (sold a Telus moto droid because I could not do that very thing).
I digress... thanks again so much!
And Paul, thanks for your sense ROM; I've had HTC phones from the Touch to the the diamond to the Hero, and missed the UI!
Click to expand...
Click to collapse
Glad to hear it. You learn the most by trial and error.
I think i got the same problem. i tried to Unlock Bootloader and Root Google Nexus One which was successful but then i tried to superboot it and when it came to the part where you "double click the ‘install-superboot-windows.bat’ file" i clicked it but it did not go to the nnext screen where the superboot completes it just stayed at the "bootloader screen". i must hve not done something or done something wrong i dont know.
So then i unplugged the phone from the pc and rebooted it. when it reeboted i wasnt getting any network, the phone was slow and the notification bar would not slide down...also i noticed the phone restarting on itself...
/i tried all kinds of "restore to factory settings" but not solved. Can anyone tell me what to do tht will work. I coud not understand what was said in the above thread as i am new to this android n my first time rooting n stuff n i believe that solution would work for me too..if some one could please explain in simple tirms the steps i need to take would be good...
Really appreciate it....
revonomics said:
I think i got the same problem. i tried to Unlock Bootloader and Root Google Nexus One which was successful but then i tried to superboot it and when it came to the part where you "double click the ‘install-superboot-windows.bat’ file" i clicked it but it did not go to the nnext screen where the superboot completes it just stayed at the "bootloader screen". i must hve not done something or done something wrong i dont know.
So then i unplugged the phone from the pc and rebooted it. when it reeboted i wasnt getting any network, the phone was slow and the notification bar would not slide down...also i noticed the phone restarting on itself...
/i tried all kinds of "restore to factory settings" but not solved. Can anyone tell me what to do tht will work. I coud not understand what was said in the above thread as i am new to this android n my first time rooting n stuff n i believe that solution would work for me too..if some one could please explain in simple tirms the steps i need to take would be good...
Really appreciate it....
Click to expand...
Click to collapse
Tell me what i need to download again and how to go about it...i really need my phone working again ((((

Acer 500a Rooted and unable to update

I have an Acer 500a I just bought off carigslist. Initially I thought it would be fine but then I realized I was inheriting someone elses problems. I hope someone may be able to help.
Within the first few hours I was noticing google Play crashed a number of times and struggled to update from Market. Somehow the update went through but now there is a system update that won't go through. I'm able to down load it and when i restart the computer to complete installation the screen goes black and says: booting recovery kernel in the corner. I then see a picture of an android and a load bar which after 2-4 seconds the android is on his back and an exclaimation mark is coming out of his belly.
My android version is 3.2
Kernel version
2.6.36.3+
Build number
Acer_a500_7.006.01_COM_GEN2
I'm pretty sure its rooted and i think that might be why its not playing nice with google market and system updates. I called the old owner and explained the problem and he just said he had it rooted and he thought he unrooted it. There is an ap called superuser in aps. (although if it were rooted would'nt I be able to uninstal some of thecrap software it comes with like GOLF HD? -- it won't let me).
The system update is for Acer_a500_7.014.01_COM_GEN2 8.88mb
My problem is all of the force closes I'm getting and the inability to update the system. Any thoughts? I don't have a usb cord to connect it to a desktop either =(
I am a bit out of practice, but...
Should be pretty simple to fix. From what I am seeing, you are running a stock rom. Just because the superuser.apk is installed on the system does not mean it is rooted, but it probably is.
Hit the market, grab "Root Checker" - simple tiny program to let you know for sure if your tab is rooted or not.
https://play.google.com/store/apps/details?id=burrows.apps.rootchecker&hl=en
From what I understand - automatic system updates will fail when trying to apply them to a rooted or modded system. Probably why you cannot auto-update.
My advice at this point would be to:
1) Since you just bought it, just do a factory wipe on it. That will remove all the stuff the prior owner had running on it and will result in a unrooted tab that should be able to get auto updates without a problem.
2) Un-Root it. Once the tablet is unrooted, the system should update without any issue.
As for your Play Store issues - I have never heard of or personally seen any issues caused with installing apps from the store on a rooted device. I have seen a few apps that will refuse to run on a rooted device - but that does not sound like your problem.
I would go with option 1 - just factory wipe the thing. Prior owner may have made tons of changes to the OS that we will never know about, and may have handed you a unstable system. Start fresh. Wipe it out.
Hope this helps you out! Let me know if I can answer any questions.
k thank you so much for the quick reply! I downloaded the root checker and it Is rooted. I did a factory wipe as found in the settings privacy tab when I bought it. That factory reset did not unroot and only cleaned out some of the aps on the device. Is there a better or more surefire way to unroot it? If I reset with the volume down key will it hard reset it?
Thank you for you help!
Draight
Okay.
I am about a year out of practice with my a500 - but from what I am think, if a factory reset still results in a rooted device - the prior user installed a stock ROM that comes pre-rooted.
I highly doubt being rooted is causing the issues you are running into.
At this point if you just want to get back to stock you can probably just install the Acer Recovery Manager from the market and use it to reflash a stock unrooted ROM. Or I see a few guides about how to manually restore back to stock over in the dev section for the a500.
Others will correct me if I am wrong, but I think Acer Recovery Manager should take care of your problem.
Hope this helps!
(Edit: Or you can just download the official stock 4.x rom (ICS) from the dev section and flash that. 3.2 is pretty slow and wonky in my experience, you should be able to just download a 4.x ROM and flash, since you are rooted. Again, I am way out of practice. Don't do anything before reading up!)
(Edit again: I think I was making this harder then needs be. Just flash any stock 3.2 unrooted ROM, done. After you do that the automatic on the air update should kick in for you and update you to ICS)
Thanks for taking the time to work with me on this. I downloaded the program you suggested and tried to use a stock rom. When i went to reboot I had a picture of an android looking up at an exclaimation mark. It was froze like that until I restarted it. Now its back to the way it was, rooted and unupdatable.
I'm probably going to try to just wipe it all over but do i need to plug it into my computer somehow? I dont have a usb connector for the tablet, just the wall charger plugin. can i just download a rom and use the utility to try install it? when I reboot it am I supposed to be pressing the volume button?
I've read a few other forums but usually they sound pretty intense...
draight said:
Thanks for taking the time to work with me on this. I downloaded the program you suggested and tried to use a stock rom. When i went to reboot I had a picture of an android looking up at an exclaimation mark. It was froze like that until I restarted it. Now its back to the way it was, rooted and unupdatable.
I'm probably going to try to just wipe it all over but do i need to plug it into my computer somehow? I dont have a usb connector for the tablet, just the wall charger plugin. can i just download a rom and use the utility to try install it? when I reboot it am I supposed to be pressing the volume button?
I've read a few other forums but usually they sound pretty intense...
Click to expand...
Click to collapse
Hmmm..
Try the thread I linked two in my second edit of my last post. You just need to grab the stock and unrooted 3.2 - put it on a MicroSD card as update.zip - then reboot with vol rocker and power switch to get the system to flash the update.
That *should* work just fine.
(Edit: Forgot the link! http://forum.xda-developers.com/showthread.php?t=1839313 - there you go)
Thankw, I am going to try it after readingna bit more. Do I need to have clockworkmod installed for all of this?
draight said:
Thankw, I am going to try it after readingna bit more. Do I need to have clockworkmod installed for all of this?
Click to expand...
Click to collapse
Nope. Just snag the stock unrooted 3.2 ROM - place it in the root of the MicroSD card as update.zip
Power down.
Power up with VOL + and POWER key held at the same time (you can let the vol rocker go when you see text appear in the upper left corner)
Should be all you need to do. Worst case; it does not work and returns you back to where you are now. Worth a shot.
If that does not work, let me know so I can do a few mins of homework and help you further. Been a long time since I have changed ROMS or had any issues with my a500.
I have bricked it twice by not following directions all the way or just making simple mistakes, but from what I have found there is always a way to recover.
Just tried it. I copied the boot zip to sd card and renamed update.zip and reset..It looked like it was going to download after showing some text in the corner and then an exclamation mark appeared above the androids head... I left it and after a few.min it rebooted back
draight said:
Just tried it. I copied the boot zip to sd card and renamed update.zip and reset..It looked like it was going to download after showing some text in the corner and then an exclamation mark appeared above the androids head... I left it and after a few.min it rebooted back
Click to expand...
Click to collapse
Hmmm. Odd.
Like I said, I am rather out of practice.
Someone more experienced them me: please help me point Draight in the right direction here?
Thanks for trying to help. =(
I wish that my tablet wasn't having such issues. I;m going to try to scramble around the forums and see if I can find some advice...If anyone has a suggestion please let me know.
Thanks again entropy,
Draight
Update:
So I've been tinkering around with it a bit more and I found a usb cord that plugs it into my computer. I keep finding boken links on this site so Im struggling to find an update I can use to flash to. I downloaded a different super user program which allowed me to temporarily unroot my device. I then restarted it and no root checker says its no rooted and I cannot find the superuser program. I think I have somewhat unrooted it -- but I think the real issue now is the recovery tool. I keep reseting it - hard reset, or factory reset and it wipes everything away but when i try to update it gets about 1/3 of the way up the bar then it stops with an '!' Mark above the droid. Im kind of annoyed at this point and hoping for some new links or some ideas on how to repair the recovery piece.
Draight
Go to the Dev section, and grad a couple of the ICS Update roms. You will see them listed for the a500. Make sure they are the FULL update roms. Should be about 3-400mb. These contain a FULL ICS Update Rom, and not a patch file.
http://forum.xda-developers.com/showthread.php?t=1816560
Then, go to the Themes and apps forum. You'll see a sticky that has the Acer Update Decrypter.
http://forum.xda-developers.com/showthread.php?t=1869505
Now, unpack the decrypter, and select one of the ICS Updates. Then hit Start. Take a couple minutes, but you will have a duplicate file with the word "decrypted" added to it.
Wait, you are not done yet.
Using a program like 7zip, or even Winzip, open the decrypted file. DO NOT EXTRACT, just open it and pull the update.zip to your PC's desktop.
Copy that update.zip file to your Ext SD Card of the tablet. Don't be putting it in any folder, just copy it to the root of the card.
Now, you still ain't done.
With the tablet off. Press and hold Vol+ and then PWR. Hold them both untill you start to see text about installing blah blah blah, then release the buttons.
If it completes, and you can reboot into ICS, then you are good to go.
If something fails during installation, then decrypt the other update Rom file you downloaded, and do the same procedure. Usually one of the 2 or three should work for you.
Note these are for the a500, and not the a501.
One more thing. It's advisable you get your UID number before doing these things. You probably won't need it, but it's nice to have written down in case you need it in the future. Inf to get it is at;
http://forum.xda-developers.com/showthread.php?t=1624645
MD
Thanks! I am downloading a few of the FULL ICS roms:
*Acer_A500_1.031.00_WW_GEN1 : http://d-h.st/uAy
Acer_A500_1.031.00_PA_CUS1: http://d-h.st/idO
Acer_A500_1.041.00_WW_CUS1: http://d-h.st/Yt5
*Acer_AV041_1.054.00_WW_GEN1: http://www.theandroidcollective.org/...00_WW_GEN1.zip
*Acer_A500_7.014.16_041.206.01_COM_GEN1: https://docs.google.com/file/d/0B_bk...hVc1RVcHc/edit
The I downloaded the ones ending with Gen1. Once they are downloaded I will continue with the instructions. Thank you so much for your help! I will post how it goes later tonight.
Draight
I just decrypted both:
*Acer_AV041_1.054.00_WW_GEN1:
*Acer_A500_1.031.00_WW_GEN1
Both get get to the third bullet quickly and the bottom says DONE! It takes like 4 seconds. I don't think the Decryption key of $12 is working
[*] Opening file: Acer_A500_1.031.00_WW_GEN1.zip
[*] Decrypting using key $12
[*] Writing decrypted file: Acer_A500_1.031.00_WW_GEN1_decrypted.zip
I try to extract something from the decrypted file and it says the file was not downloaded properly and I should try redownload it...it says its not a proper archive
wahoo!
So that worked! I down loaded the file Acer_AV041_A500_1.033.00_PA_CUS1 and extracted the update. I palced the update on the sd card and booted with the power and sound volume pressed down. it went through the installation procedure and restarted twice before saying it was upgrading my aps and BOOM its got ICS and everything looks great. Thank you so much for your help and I hope that this paper trail is able to help someone in the future
My problem is that I'm on ICS and I'm rooted, but I just can't download a custom recovery. I've tried, and I haven't gotten anywhere
Sent from my SPH-L710 using Tapatalk 2

root issue

I updated my android to 4.3. since then I lost the root permissions. The phone shows as being unlocked when I start it up. when I have tried different programs or apps, I can't get the permissions back. One program I have tried, sorry, don't remember the name, said it was going to reboot the phone, but that never happened. I used it with my older version of android and it worked fine.
When I got into recovery mode, I the the android robot with the red !, saying no command.
I wanted to see if anyone knew what might be going on and what I could do to get back my permissions.
Thanks
jrwn said:
I updated my android to 4.3. since then I lost the root permissions. The phone shows as being unlocked when I start it up. when I have tried different programs or apps, I can't get the permissions back. One program I have tried, sorry, don't remember the name, said it was going to reboot the phone, but that never happened. I used it with my older version of android and it worked fine.
When I got into recovery mode, I the the android robot with the red !, saying no command.
I wanted to see if anyone knew what might be going on and what I could do to get back my permissions.
Thanks
Click to expand...
Click to collapse
Android 4.3 contains security fixes that require root to be updated. Download the SuperSu v1.55 zip from http://download.chainfire.eu/346/SuperSU/UPDATE-SuperSU-v1.55.zip and copy the file to the Nexus' internal storage. Reboot the phone to recovery and install UPDATE-SuperSU-v1.55.zip from Clockworkmod or TWRP, then reboot the phone. You should now be able to grant privileges to the apps that require root access.
BobWalker said:
Reboot the phone to recovery and install UPDATE-SuperSU-v1.55.zip from Clockworkmod or TWRP, then reboot the phone. You should now be able to grant privileges to the apps that require root access.
Click to expand...
Click to collapse
The big issue I am running into is when I try to go to recovery, I get the dead android and "no command" error.
jrwn said:
The big issue I am running into is when I try to go to recovery, I get the dead android and "no command" error.
Click to expand...
Click to collapse
you updated stock, so you now have the stock recovery, thats the "dead" android. flash a custom recovery via fastboot, then flash the supersu su binaries via your new custom recovery. youll be fine, make sure to stay away from root toolkits or you will nwver learn anything, like this. this is such a basic thing to know to do, yet people that use root toolkits dont know.
OK, I'll have to try that tonight or over the next couple of days when I have a chance. Thank you.
jrwn said:
OK, I'll have to try that tonight or over the next couple of days when I have a chance. Thank you.
Click to expand...
Click to collapse
if you dont know how, read a little. its really easy. its a matter of typing one line into a command window
OK, I've tried it, but it doesn't seem as if the computer is communicating with the phone. I have also tried one of the auto programs to do it, but it gets stuck at "waiting for device." If I reboot the device and try to get into recovery mode, I just get a dead android saying "no command" I can't get any other options to try to reset the devices back to factory settings.
I have tried the reset option in the settings menu, but It still saves information and doesn't take the phone back to 4.2, which is what I first had.
I'm hoping someone has some ideas on what I can do. On the other hand, I am planning on upgrading my wife's phone. I might just get a new one, and give her this one, although I'm not sure if I want to get a nexus, maybe a different one this time.
jrwn said:
OK, I've tried it, but it doesn't seem as if the computer is communicating with the phone. I have also tried one of the auto programs to do it, but it gets stuck at "waiting for device." If I reboot the device and try to get into recovery mode, I just get a dead android saying "no command" I can't get any other options to try to reset the devices back to factory settings.
I have tried the reset option in the settings menu, but It still saves information and doesn't take the phone back to 4.2, which is what I first had.
I'm hoping someone has some ideas on what I can do. On the other hand, I am planning on upgrading my wife's phone. I might just get a new one, and give her this one, although I'm not sure if I want to get a nexus, maybe a different one this time.
Click to expand...
Click to collapse
install the right drivers. and dont use one of those "auto" programs, thats why you dont know what you are doing now.
simms22 said:
install the right drivers. and dont use one of those "auto" programs, thats why you dont know what you are doing now.
Click to expand...
Click to collapse
I did try to do it manually, the phone didn't respond. This is why I also tried a program. You are correct, I don't know what to do from this point.
jrwn said:
I did try to do it manually, the phone didn't respond. This is why I also tried a program. You are correct, I don't know what to do from this point.
Click to expand...
Click to collapse
you need to get the driver installed to your computer, fastboot as well. when its all ready, open fastboot and a command window then and type.. fadtboot devices. then itll see your device(or not if the driver isnt installed). when it sees your device, you need fastboot flash your recovery.. fastboot flash recovery recoveryname.img. then you need to flash the latest su binaries via your recovery(latest supersu will work).

Please Help! Am I Able To Access My System Folder??

Hi guys!
I have made a serious mistake, and I feel so stupid! I was wondering if any of you awesome people at XDA would be able to save me.
I have an LG G2 vs980 Lollipop 5.0.2
So, all I wanted to do was change my startup screen to get rid of that boring LG logo and replace it with something neater. I went over to Google and found a guide on how to do this, and followed the steps 1 by 1. Everything actually worked out perfectly, but it wasn't until after I was locked out of my phone that I realized that I had used a startup image that was not compatible with my LG G2! (Total face palm!). Now, whenever I power my phone, it flashes that "neat" image that I replaced the stock one with - before the screen goes completely blank and I cannot do anything at all. That's not good!
So my question is this - Is there a way I can access my system folder without having access to my phone? I know EXACTLY what file I need to remove/edit to solve this problem! In fact, that is what is frustrating me the most. It's not some random error message out of the blue that I know nothing about. I know exactly what the problem is, I just don't know if I have access to the solution. I just really hope I don't have to wipe everything back to stock all because of a lousy startup image.
Is there a way to access the system folder on my phone so I can remove the bad file and replace it with the stock image so I can get my phone working again? If anybody can help me figure out the best method to solve this issue, I would be forever grateful! Thank you guys so much in advance!
Much appreciative,
Terri (Psyintz)
If you are rooted I assume you have also TWRP or CWM installed. TWRP has an integrated file explorer so you can delete these files. And you can try to push new files through ADB. Just google
android adb push while in recovery
Good luck!
Jan Philipp said:
If you are rooted I assume you have also TWRP or CWM installed. TWRP has an integrated file explorer so you can delete these files. And you can try to push new files through ADB. Just google
android adb push while in recovery
Good luck!
Click to expand...
Click to collapse
But I don't remember installing TWRP or CWM during the process. The guide I used to change my startup image just had me use some sort of "one-click rooting" application, before detailing which files I needed to backup and exchange in order to change my startup image. So I'm not very confident in the fact that I have either of those things installed, which makes me afraid to try and click on my factory reset button.
After finding a guide on installing TWRP via this ADP thing, I seem to get stuck early on in the process. When it asks me to open a command prompt and type "adb reboot bootloader" it returns the message "error: device (null) not found." I am not sure why it is not finding my device. Is it because my phone does not boot, so it is not able to connect to it?
I am beginning to lose faith in there being an option to solve this problem without just performing a factory reset, and losing all of my data. If I were to take this route, can I just use my phone's built-in option? By holding the correct keys, and then choosing to wipe all my data and return to stock?

Flash mobile with volume down broke

Hello all,
After 5 hours searching and almost done, it seems like the phone won against me...
I have a friend who has his device under Android5, latest version, and need at least Android 6 to update his bank app, which required this update to work normally.
The worst part here, is that the device has the down volume button not working anymore (at all)
I wa a little rusty because I moved two years ago to iOS, but I have some memories with my old samsung and Nexus 6 flashing.
So here's what I've tried so far, I can forgot to mention some stuff because it's been a long work lol
So I have a 1GB SD Card and my indows 10 computer.
- I started to download and install all ADB and fastboot drivers.
- I've activated Debugged mod and OEM Unlock. I couldn't find if the bootloader is allowed for unlock or not, because the command didn't work. So I supposed that yes, it is. The device is the J3 SM-J320FN bought in France, new.
ADB work perfectly, but I didnt manage to get the device recognsied with the Fastboot mode. "ADB Devices" list the phone, but fastboot devices command does not show anything, it goes back to another line.
My friend didn't mentionned that he has installed a recovery. I don't know how, but the recovery is very basic. Here's a photo of the recovery screen. It appear when i press Vol+, home and power button, but I can't move anywehre because of the low volume button not working. Vol-, home and power doesn't work for the Download mode.
I finally managed to enter in download mode by using the command ADB REBOOT DOWNLOAD. With that, I honestly don't remember how I did it, but I think I've flashed a file which allow me to root the device from ODIN. With this, I've got confirmation of Root Checker app that the device is now rooted.
I've passed many hours to make some tests here and there, but nothing gave me a real result. Then I found two apps : ROM Manager and Flashfire.
ROM Manager : The app says that it doesn't find Superuser in System/bin/su. So it's like the device is not rooted. Nothing seems to work on the app too.
Flashfire : It seems like this app can do the job, but I can't finalize the process. So I've changed the year of the phone to 2013 to get the app running, I've tried a wipe, and here... Yahoooo ! A big Loading screen with many line codes, and then... nothing. My computer make the sound to say that it recognised the device, and a full blackscreen for 10mn. Exactly same process if I try to flash a ROM, or whatever action (even doing a backup).
I suppose it's because the app wasnt granted the root permissions. Not sure, because even if the phone seems to have the root status, I never get any pop up to ask if I allow to get the permission or not. I've tried to dwnload the APK for SuperSU app or something, and nothing seems to work.
So now, It looks like i'm close, but I also think that there is nothing more to do.
The device is powering on, with all its data, and seems rooted, but I can't do anything. It seems like the recovery is the only option to go trough the install.
So you guys, do you have any ideas of what can I do ?
I'd like to install LineageOS, but any ROM with Android 6.0 min. will be fine for me.
Also, pardon my english. I'm french lol
Thank you for your help..!
Alerion13 said:
Hello all,
After 5 hours searching and almost done, it seems like the phone won against me...
I have a friend who has his device under Android5, latest version, and need at least Android 6 to update his bank app, which required this update to work normally.
The worst part here, is that the device has the down volume button not working anymore (at all)
I wa a little rusty because I moved two years ago to iOS, but I have some memories with my old samsung and Nexus 6 flashing.
So here's what I've tried so far, I can forgot to mention some stuff because it's been a long work lol
So I have a 1GB SD Card and my indows 10 computer.
- I started to download and install all ADB and fastboot drivers.
- I've activated Debugged mod and OEM Unlock. I couldn't find if the bootloader is allowed for unlock or not, because the command didn't work. So I supposed that yes, it is. The device is the J3 SM-J320FN bought in France, new.
ADB work perfectly, but I didnt manage to get the device recognsied with the Fastboot mode. "ADB Devices" list the phone, but fastboot devices command does not show anything, it goes back to another line.
My friend didn't mentionned that he has installed a recovery. I don't know how, but the recovery is very basic. Here's a photo of the recovery screen. It appear when i press Vol+, home and power button, but I can't move anywehre because of the low volume button not working. Vol-, home and power doesn't work for the Download mode.
I finally managed to enter in download mode by using the command ADB REBOOT DOWNLOAD. With that, I honestly don't remember how I did it, but I think I've flashed a file which allow me to root the device from ODIN. With this, I've got confirmation of Root Checker app that the device is now rooted.
I've passed many hours to make some tests here and there, but nothing gave me a real result. Then I found two apps : ROM Manager and Flashfire.
ROM Manager : The app says that it doesn't find Superuser in System/bin/su. So it's like the device is not rooted. Nothing seems to work on the app too.
Flashfire : It seems like this app can do the job, but I can't finalize the process. So I've changed the year of the phone to 2013 to get the app running, I've tried a wipe, and here... Yahoooo ! A big Loading screen with many line codes, and then... nothing. My computer make the sound to say that it recognised the device, and a full blackscreen for 10mn. Exactly same process if I try to flash a ROM, or whatever action (even doing a backup).
I suppose it's because the app wasnt granted the root permissions. Not sure, because even if the phone seems to have the root status, I never get any pop up to ask if I allow to get the permission or not. I've tried to dwnload the APK for SuperSU app or something, and nothing seems to work.
So now, It looks like i'm close, but I also think that there is nothing more to do.
The device is powering on, with all its data, and seems rooted, but I can't do anything. It seems like the recovery is the only option to go trough the install.
So you guys, do you have any ideas of what can I do ?
I'd like to install LineageOS, but any ROM with Android 6.0 min. will be fine for me.
Also, pardon my english. I'm french lol
Thank you for your help..!
Click to expand...
Click to collapse
So why not just install Marshmallow with Odin?
After that install TWRP the same way?
Is it possible ?
I though that only installing custom rom will allow the phone to go beyond 5.1. Because the phone can’t find any update on OTA.
So if I download the correct file, flashing it should work ?
Thanks for the answer
Alerion13 said:
Is it possible ?
I though that only installing custom rom will allow the phone to go beyond 5.1. Because the phone can’t find any update on OTA.
So if I download the correct file, flashing it should work ?
Thanks for the answer
Click to expand...
Click to collapse
I assumed the J320 had received the MM update. However it seems not.
In that case custom is the only way. For that you will need to install twrp with Odin.
Exactly what I though yesterday. I will call him to see what can I do.
So the latest versions of TWRP are compatible with the touch screen, and then the volume down button isn’t required to process ? After the recovery installed, I will be able to find the zip of the custom rom and install it right ?
Thank you again
Alerion13 said:
Exactly what I though yesterday. I will call him to see what can I do.
So the latest versions of TWRP are compatible with the touch screen, and then the volume down button isn’t required to process ? After the recovery installed, I will be able to find the zip of the custom rom and install it right ?
Thank you again
Click to expand...
Click to collapse
Twrp is touch driven so no need for hard keys.
The only issue is that you need to reboot immediately into recovery mode after flashing twrp.
As down isn't working you will need to leave auto reboot enabled and catch it at the right moment to boot to recovery as it reboots.
Excellent. I will try that and will let you know. Thank you

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