I'm sorry if there is a post for this already, I have been using this website for a while and until now never had to post because all my questions were answered. This time I am not able to find an answer or even a thread with the same circumstances as mine. I rooted and installed a custom rom but didn't like it. I tried going back to stock but accidentally wiped the phone so the backups and the roms were gone. I had TWRP installed but it wouldn't allow me to sideload via adb and when I tried to enter download mode, it would enter it but go to a screen that just said firmware update and stayed stuck on there. So I went out and bought a OTG usb cable to read the rom off a flash drive and I installed it but now instead of going to recovery it goes to a black screen that just says fastboot mode udc start. Download mode still does the same firmware update screen. Any help would be appreciated, thank you.
What rom did you try to install what software version were you on
Sent from my VS980 4G using Tapatalk
spinninbsod said:
What rom did you try to install what software version were you on
Sent from my VS980 4G using Tapatalk
Click to expand...
Click to collapse
I'm on the latest software and I tried to put the newest stock I could find but honestly I might've made a mistake since my PC is loaded with different roms and files from all kinds of phones and software versions.
same problem here,,, i was going to open a thread but i jumped on this one. Let me explain what i did,
i was running ls980 zv8 clodyflex 1.4 jellybean and i went to recovery TWRP wiped everything exept internal storage flashed kk baseband and ZVA radio then flashed cloudyflex 2.2 and rebooted and phone went to the same screen as the owner of this thread: fastboot mode udc start and i cant get in to recovery to restore my backup. Ive tried lg tools method to flash a tot firmware but even having all drivers it doesnt happend, i tried fastboot method with command prompt to flash recovery twrp again and no luck either, i ran out of options here but there is gotta be a solution for this PLEASE HEEELP!
smallyetzon said:
same problem here,,, i was going to open a thread but i jumped on this one. Let me explain what i did,
i was running ls980 zv8 clodyflex 1.4 jellybean and i went to recovery TWRP wiped everything exept internal storage flashed kk baseband and ZVA radio then flashed cloudyflex 2.2 and rebooted and phone went to the same screen as the owner of this thread: fastboot mode udc start and i cant get in to recovery to restore my backup. Ive tried lg tools method to flash a tot firmware but even having all drivers it doesnt happend, i tried fastboot method with command prompt to flash recovery twrp again and no luck either, i ran out of options here but there is gotta be a solution for this PLEASE HEEELP!
Click to expand...
Click to collapse
I just saw this. I have done the same thing. But I have been able to recover with TOT file. The trick to enter download mode is to hold the volume up button when you power on the phone. If you can get the phone to stay off, then hold volume up, while holding vol up plug in your data cable. You should get DL mode. If you do this while the LG Flash Tool is open, then go to control panel and find the COM port for the LG phone, open properties and advanced, change the COM port to COM41. Once that is done, also once the flash tool files are loaded and the COM41 box says ready, unplug your phone then replug your phone. You may have to also hold volume down here, I can't remember. But the first time is to let the drivers configure. The second time lets the flash tool see the COM port and it should start flashing. It will get around 80% and reboot. The flash is done and the tool will eventually report an error.
I installed the KK baseband as instructed, even also came from the stock ZVC update, rooted via IORoot25. It's a shame as I've heard great things about this ROM.
Hope that helps.
[FIX] NO Recovery mode, No download mode, after OTA on rooted LG G2
I know you guys didn't brick doing the OTA, but it might help: [FIX] NO Recovery mode, No download mode, after OTA on rooted LG G2
I was in the IRC channel when it happened, hehehe...
Good luck!
Compass.
Related
Ok, so I flashed cleanrom ex, and on reboot I got a security error.
I tried to get to recovery, but it wipes data and immediately reboots.
I've tried flashing the stock rom, but lg flash tool tells me it's the wrong device (now thinks it's a D802).
I've been trying to get into TWRP on scrosler and samsunggalaxystig's advice, first by repeatedly trying an adb reboot recovery, then by writing a batch script to do it repeatedly in order to catch it before it reboots.
Problem is, I don't know if I had already had ADB drivers installed on this computer for the G2 (had rooted while at work), and despite installing them more than once, I don't think the device actually has enough time to be recognized as I still have an unrecognized "g2" in device manager while TWRP is wiping.
Any ideas? Is there any way I can force the install of the ADB driver without having it connected for more than 20 seconds? Spitballing... would it be possible to actually flash a D802 image so I could then root, change the build.prop to D800, and then flash the D800 image?
Totally at a loss at this point.
did you solve your problem? i have a similar problem and i just bricked an s3. this g2 is brand new and now it's bricked too! if you have found a solution please respond... :crying:
kureta said:
did you solve your problem? i have a similar problem and i just bricked an s3. this g2 is brand new and now it's bricked too! if you have found a solution please respond... :crying:
Click to expand...
Click to collapse
No problem if you brick a sammy phone. its easy to flash stock rom. How did you brick your g2?
---------- Post added at 08:13 PM ---------- Previous post was at 08:11 PM ----------
lastdeadmouse said:
Ok, so I flashed cleanrom ex, and on reboot I got a security error.
I tried to get to recovery, but it wipes data and immediately reboots.
I've tried flashing the stock rom, but lg flash tool tells me it's the wrong device (now thinks it's a D802).
Totally at a loss at this point.
Click to expand...
Click to collapse
Why did flashing a rom leads you to that error? Sorry but not familiar with your roms but is this rom really for your LG G2 model?
lastdeadmouse said:
Ok, so I flashed cleanrom ex, and on reboot I got a security error.
I tried to get to recovery, but it wipes data and immediately reboots.
I've tried flashing the stock rom, but lg flash tool tells me it's the wrong device (now thinks it's a D802).
I've been trying to get into TWRP on scrosler and samsunggalaxystig's advice, first by repeatedly trying an adb reboot recovery, then by writing a batch script to do it repeatedly in order to catch it before it reboots.
Problem is, I don't know if I had already had ADB drivers installed on this computer for the G2 (had rooted while at work), and despite installing them more than once, I don't think the device actually has enough time to be recognized as I still have an unrecognized "g2" in device manager while TWRP is wiping.
Any ideas? Is there any way I can force the install of the ADB driver without having it connected for more than 20 seconds? Spitballing... would it be possible to actually flash a D802 image so I could then root, change the build.prop to D800, and then flash the D800 image?
Totally at a loss at this point.
Click to expand...
Click to collapse
Hey I'm in the exact same position as you... did you manage to figure out a way to get into recovery?
kureta said:
did you solve your problem? i have a similar problem and i just bricked an s3. this g2 is brand new and now it's bricked too! if you have found a solution please respond... :crying:
Click to expand...
Click to collapse
twrp corrupted my cache partition and the phone could not boot. i tried to flash cwm while in twrp and i guess i messed up recovery and/or boot partitions. al i could get was fastboot. i flashed a boot.img i got from somewhere in here. now it says security error and it does not boot. it does not enter into fasboot. i can enter into recovery mode but it is the stock lg recovery and if i choose "delete all data", which is the only option, it gives an error and restarts.
if i try to flash stock firmware as described in this post it stops at 49%.
kureta said:
twrp corrupted my cache partition and the phone could not boot. i tried to flash cwm while in twrp and i guess i messed up recovery and/or boot partitions. al i could get was fastboot. i flashed a boot.img i got from somewhere in here. now it says security error and it does not boot. it does not enter into fasboot. i can enter into recovery mode but it is the stock lg recovery and if i choose "delete all data", which is the only option, it gives an error and restarts.
if i try to flash stock firmware as described in this post it stops at 49%.
Click to expand...
Click to collapse
I am on the same boat, same problem, and don't know what else to do...hope someone could help us out.
Yep me to same issue. Pretty much tried 6 different methods and still stuck
Solution
IF you still have guys this issue i have solusion for you .
This happened to me yesterday too
1. Download ADB drivers for LG G2 LINK
2. Download LG Mobile Support Tool you can find this here LINK
3. HOLD VOLUMEUP + POWER button to enter the download mode and connect your device to pc
4. Run LG Mobile Support Tool ( if your device vas found click settings select upgrade firmware this will download for you 1.9 GB STOCK FIRMWARE
5. Enjoy your mobile
Any luck anyone? I can't get the suggestion in the last post to work because my phone just goes from the LG Logo to Security Error. I can't get to download mode. Or recovery. Or get ABD to see it.
Odd
quatrix1 said:
IF you still have guys this issue i have solusion for you .
This happened to me yesterday too
1. Download ADB drivers for LG G2 LINK
2. Download LG Mobile Support Tool you can find this here LINK
3. HOLD VOLUMEUP + POWER button to enter the download mode and connect your device to pc
4. Run LG Mobile Support Tool ( if your device vas found click settings select upgrade firmware this will download for you 1.9 GB STOCK FIRMWARE
5. Enjoy your mobile
Click to expand...
Click to collapse
i have to choose upgrade recovery and it gets past analyzing then doesnt show a bar for downloading software...
HELP!!!!!!!!!!!!!!!!!!!!!
Can someone help me I successful in installing twrp though autorec apk and the same for rooting my g2. I flashed cm with nightlies and noticed that twrp had a update. I downloaded the zip and try flashing it like flash a recovery in flashify but that din't work and readed that zip flashing though twrp didn't work but renumber this video and though it would update my recovery to 2.7.1 but it was successful in doing so but when I got to recovery it was 2.7.0. That not the problem form there I tried to boot into my system. Then it turn off though that I passed power off instead but when turn my g2 back on I found that I had a security error show up then turn back off. So can someone help show me a tutorial on unbick or a way to remove error. Also I have the d800 and i have some idea without going though unbicking a hard factory rest or flasing twrp form there site in fastboot. Finally that lg mobile support tool say that im up to date. I think doing the autorec twrp recovery locked as my phones recovery like trying to flash a rom with a locked bootloader.
Ok guys i trying to help cause it happen to me too,sorry for my english too slow but i try,when you try go twrp with volume up+power buttom it still show security errow,that ok your device not hardbrick yet,when you try volume down+power buttom it show hard reset it does mean it clear all rom,picture in internal but it go to twrp again,and them just flash another rom in your device and it done,have great day piece
I had the same problem on my G2 was using twrp to flash cyanogenmod not sure what i did and phone rebooted to show security error message. I entered recovery mode (power and volume down release when logo pops up and press power and volume down again hold for a second then tap both buttons a few times) pulled up the option to factory reset so i did and it booted me into twrp and allowed me to flash cyanogenmod correctly this time and the phone started back up with no problems. hope this can help someone else as well.
Anybody know the solution?
I also have the security error boot loop after flashing KK baseband files... I tried to enter recovery mode by holding vol down & power button but it wont work...
it does work when i enter download mode (vol up + power button), but i don't want to have to download the stock LG ROM..
anybody know how to by pass the security error boot loop to allow me to reflash?
kureta said:
did you solve your problem? i have a similar problem and i just bricked an s3. this g2 is brand new and now it's bricked too! if you have found a solution please respond... :crying:
Click to expand...
Click to collapse
if you still bricked. try this
get your tools from here: http://forum.xda-developers.com/showthread.php?t=2432476
keep reading or follow above thread. both will work.
best of luck.
After all the drivers installed correctly
make sure your phone is connected to the
com41 port change it if it already not ( Under device manager > Go to Ports (COM & LPT). You should see LGE AndroidNet etc... Right click it and go to Properties > Port Settings > Advanced > Change COM Port Number to COM41 > OK > OK > Close Device Manager )
run flash tool
1. choose type CDMA
2. chose PhoneMode: DIAG
leave rest as it is.
3. choose your kdz file.
then go to download mode
1. power off
2. press and hold vol + key and plug usb cable
3. done )
We have go 2 flashing modes.
1. Normal Flash is for flash with keeping data
2. CSE flash is totally new start preffered.
hope this helps.
thanks but it was a long time ago and I further messed up things, ended up sending it for warranty. they have replaced the device.
me too messed up my cell 1st i was on cloudy g2 v2.1 installed cm11 nightlies but the camera was not so good so then installed cloudy g2 v2.1 n since then i was having problem regarding sound during call and also some hard noise like siren starts randomly, i searched alot but didnt got any solution. wiped all many times (including internal storage ). but no luck then i thought i might be baseband error so i just downloaded auto recovery n flashed it n then stuck into security error but thank GOD i had custom rom in my sd card that time i flashed it back but still em having the sound error.
lastdeadmouse said:
Ok, so I flashed cleanrom ex, and on reboot I got a security error.
I tried to get to recovery, but it wipes data and immediately reboots.
I've tried flashing the stock rom, but lg flash tool tells me it's the wrong device (now thinks it's a D802).
I've been trying to get into TWRP on scrosler and samsunggalaxystig's advice, first by repeatedly trying an adb reboot recovery, then by writing a batch script to do it repeatedly in order to catch it before it reboots.
Problem is, I don't know if I had already had ADB drivers installed on this computer for the G2 (had rooted while at work), and despite installing them more than once, I don't think the device actually has enough time to be recognized as I still have an unrecognized "g2" in device manager while TWRP is wiping.
Any ideas? Is there any way I can force the install of the ADB driver without having it connected for more than 20 seconds? Spitballing... would it be possible to actually flash a D802 image so I could then root, change the build.prop to D800, and then flash the D800 image?
Totally at a loss at this point.
Click to expand...
Click to collapse
kureta said:
did you solve your problem? i have a similar problem and i just bricked an s3. this g2 is brand new and now it's bricked too! if you have found a solution please respond... :crying:
Click to expand...
Click to collapse
k2thejx5 said:
Yep me to same issue. Pretty much tried 6 different methods and still stuck
Click to expand...
Click to collapse
Hey guys, I was in the same boat for a little but was able to fix it by downloading the 801C firmware and flashing it. The firmware file should be a KDZ extension and you should also download LG Flash Tool 2014. Turn the phone on by holding the Power button and Volum up while it is plugged into your computer(It has to be plugged into a computer with LG phone drivers or it won't work).
Follow this tutorial and you will be set.
http://www.droidviews.com/how-to-restore-lg-g2-to-stock-firmware/
Start at step 17 on Method 1 and you should be golden.
Hope this helps guys!
Hi, I just bought an LG G2 D802 20B Model a couple days ago, yesterday I wanted to downgrade to 4.2.2 and I ended up bricking the phone.
The phone is non rooted, doesn't have any custom recovery, and not recognized by adb even though i installed all the drivers ( koush drivers, PdaNet, Lg drivers ...)
At first I flashed with .kdz file and it ended in bootloop, I tried to factory reset but it doesnt have any effects with the stock recovery it only shows the green android bot and blue progress bar and then restart in 3 seconds and reboots to lg logo and start looping.. After a restart the download mode didn't work anymore it showed me fastboot error, I searched for the tutorial that actually worked and I flashed with .tot method but there is still bootloop and the download mode is stuck at the image attached. The phone is not recognized by neither windows or ubuntu therefore I can't use adb to fix the partitions.
Can any body provide me with a solution? The phone is still new and it will be a shame if its transformed to a brick in 3 days :crying:
Hey..hmm i think thats how download mode it is...so did you tried to flash again a firmware?
raulx222 said:
Hey..hmm i think thats how download mode it is...so did you tried to flash again a firmware?
Click to expand...
Click to collapse
Actually the picture attached is stuck and it doesnt change , and the pc can't recognize the phone so I cant flash it with another firmware
BUMP! please help!!
This isn't download mode.
here
only aboot, boot, laf..
bender_007 said:
This isn't download mode.
here
only aboot, boot, laf..
Click to expand...
Click to collapse
Thanks for your reply, however the phone is not recognized on windows neither on ubuntu therefore this tutorial can't help ...
I am in the exact same situation.
Mine is a D802 32GB Hong Kong model. I stupidly ran AutoRec which soft-bricked my phone. Managed to get Download Mode working, then flashed 20C and 20B which bootlooped. Then I attempted to flash 10B, which got me into this exact state:
Download Mode not working (only shows "Download Mode", does not go to firmware recovery screen, not detected in Win/Linux)
Factory reset (Power + Vol Down) can go to factory reset screen, after factory reset, still bootloop.
Once in a while, I also get the Android icon which then disappears after a few seconds and goes to LG logo again.
If I plug the phone in and do a factory reset, Windows detects the LGE AndroidNet modem, and Linux will detect cdc_acm USB Abstract Control Model driver. Flash Tool and LG Mobile Support seems to detect the phone and attempt to flash, but the phone restarts after a short while.
I have no idea what else to do
Hello guy's,
i have quiet a strange issues with my lg g2
I was on Cloudy flex (Kitkat) with my rooted G2 and wanted to try out the new Lollipop Cloudy ROM.
So i flashed it using TWRP.
It did not work and i Realized that i should have bin on Android 5.0 stock before flashing.
So i went back to 4.4.2 Stock ROM using the LG flash Tool and a kdz file.
Now the Phone is working fine, but there is no way to got to Download or Recovery mode anymore.
I did not expect TWRP to be installed anymore but i don't even have the stock Recovery and much more important no download mode.
Can somebody help me?
Try quickboot to boot to recovery.
what variant are you on ?
bender_007 said:
Try quickboot to boot to recovery.
what variant are you on ?
Click to expand...
Click to collapse
d802
i think i bricked it now!
i was able to root the device and i installed Flashify.
Than i flashed laf.img with flashify according to that FIX: http://forum.xda-developers.com/showthread.php?t=2706590
Now i cant do anything regardless of what i do the LG logo comes up and stays there for ever.
Even when i plug in the USB cable only the LG Logo pops up.
At least i can still see it in device manager but i can not find it in CMD using that instruction:
http://forum.xda-developers.com/showthread.php?t=2477595
Nobody an idea?
Because i ran out of them!
Well you are doing stuff on your own m8.
You will get a secure brick this way.
More info needed..what is your device recognized as ?
Update: Flashed a ROM and the D801 laf.img as suggested and things are up and running normal again.
Alright, so I've tried going through a number of solutions but none of them seem to work for me at this point.
LG G2 D801 (T-mobile version, unlocked)
Rooted device with stump root
Installed TWRP with Autorec
Stupidly took an OTA at this point, it gave me the "secure boot error" once and now the device has a bootloop at the LG screen (without the "secure boot error" text, mind you)
Attempting to enter Download mode (Vol up + plug in usb) has the same bootloop (nothing even close to showing download mode nor fastboot)
I can access TWRP though, and the device is at least visible in adb once I'm in TWRP.
I considered flashing CM to it as is, but I wasn't sure how that would affect the issues with booting and download mode.
Also, before someone suggests this thread about reflashing the kdz/tot, I don't think I can, since I can't seem to enter download mode.
Suggestions? The goal was to get to BlissPop ROM, or CM12.1 if that didn't end up working well for me, although at this point I just want to get it working however I can.
joshery420 said:
Alright, so I've tried going through a number of solutions but none of them seem to work for me at this point.
LG G2 D801 (T-mobile version, unlocked)
Rooted device with stump root
Installed TWRP with Autorec
Stupidly took an OTA at this point, it gave me the "secure boot error" once and now the device has a bootloop at the LG screen (without the "secure boot error" text, mind you)
Attempting to enter Download mode (Vol up + plug in usb) has the same bootloop (nothing even close to showing download mode nor fastboot)
I can access TWRP though, and the device is at least visible in adb once I'm in TWRP.
I considered flashing CM to it as is, but I wasn't sure how that would affect the issues with booting and download mode.
Also, before someone suggests this thread about reflashing the kdz/tot, I don't think I can, since I can't seem to enter download mode.
Suggestions? The goal was to get to BlissPop ROM, or CM12.1 if that didn't end up working well for me, although at this point I just want to get it working however I can.
Click to expand...
Click to collapse
Flash a a ROM so that your phone is usable. Then you can flash download mode using flashify. Download laf.IMG for the d801 and then you can use flashify.
Sent from my LG-D800 using Tapatalk
xmayhemreturnsx said:
Flash a a ROM so that your phone is usable. Then you can flash download mode using flashify. Download laf.IMG for the d801 and then you can use flashify.
Sent from my LG-D800 using Tapatalk
Click to expand...
Click to collapse
Great, that worked like a charm!
Thanks so much.
It feels like a dumb question now, it'd just been a year or two since I last flashed a ROM and wasn't sure if that was the right step to take next or not haha.
ROM is up and running well and laf.img got my download mode back, so all is well again.
So here's what happened i was flashing the LLAMA Sweet Kernel for my D802 from RenderKernel (KK Bootsack loki signed, KK Bootloader) then i got stuck on LG Logo at first i thought it was fine but it hasn't move for like 30 mins. Then i tried to reboot and enter recovery mode. I can't enter recovery mode i tried it several times turned off first then Volume Down + Power button its not working anymore. But i can access DOWNLOAD MODE which is good i think.
Can someone please help me sort this thing out i just need to have TWRP recovery and i can handle the rest. How could i flash it using download mode. Thank you guys
LG G2 D802
16GB Version
Euphoria ROM
LLAMA Sweet Kernel
Try installing the stock LG Mobile Support Tool and USB drivers.
Open the support tool program, connect the phone in download mode, click on "Options" in the top right-hand corner, select upgrade recovery, and, hopefully, the program will download and install the correct firmware for your phone.
audit13 said:
Try installing the stock LG Mobile Support Tool and USB drivers.
Open the support tool program, connect the phone in download mode, click on "Options" in the top right-hand corner, select upgrade recovery, and, hopefully, the program will download and install the correct firmware for your phone.
Click to expand...
Click to collapse
Will this one completely delete everything? Or change the current ROM i've been using // Will this one also delete media files photos/music etc?
Is there any way that i can just flash TWRP on download mode so that i will just flash bootloader/bootstack or kernel thats causing this bootloop/brick.
Thanks
Yes, it will wipe everything.
audit13 said:
Yes, it will wipe everything.
Click to expand...
Click to collapse
So There's no other way to save my media files. i mean there's no other way to flash any recovery to my phone even though i can access download mode? Is that it sir?
have you tried re flashing twrp?
How can i re-flash it? ROM not loading stuck on Boot Logo, can't go to recovery. Only download mode working i already installed drivers and its been detected. I just dont know if there's a way to flash twrp on download mode.
I read some posts where it will delete data, others say it won't. I would just assume that flashing stock would return to stock and delete data.
Not sure how to flash twrp from download mode.