Develop Bugs

[Q] Messed up my E975... need help... :(

Hello all, on a stock E975 I installed freegee and then cwm, unlocked the bootloader and installed fastboot (i think, there's the start menu if I hold vol+ and power).
The phone shows 'google' and an open lock at the boot also.
Now, I messed up the OS of the phone and t the moment it 'only' boots to cyanogenmod 10.2.0, wifi and Bluetooth aren't working and IMEI reports all zeroes if without SIM, 'unknown' if SIM is inserted.
I know his is a big trouble since I haven't freegee backup anymore but I'd like for the moment to return to stock firmware. Onestep at a time.
So, I need help in how to install stock firmware since the various methods I've tryed so far aren't working.
I got the right E97510H_00.kdz file downloaded ith the Original LG firmware program but I am unable to flash it anymore using KDZ_FW_UPD.exe: I start with phone in upload mode but the program reboots the phone, fastboot menu comes up and firmware update cannot continue anymore and exits with an error.
What should I do to let KDZ_FW_UPD continue with updating firmware?

SOLVED!
Just made a 910k type cable, connected phone to PC and set lg updater to Emergency mode.
Stock firmware restored perfectly and IMEI is working again too.

also...
when the phone reboots to fastboot while trying to flash kdz, power off phone, dont close/exit kdz updater, disconnect usb cable, switch to download mode again and the flashing should finish. i always had success with this one. hth!
Sent from my LG Optimus G using xda app-developers app

Stuck in cwm boot loop, help plz

I have LG optimus g pro E988 (India) , rooted and installed debloted rom from anirudh, done so many stupid things with my phone but never bricked it but my phone model number is changed and now its E980, i was bored with my jb so think about update it to KK so i go to cwm and restore the stock lg rom which was also rooted then hit update and after my phone downloaded update i m stuck in cwm boot loop, did every thing but nothing work because my phone driver is not matching because it is now E980...... i tried to connect adb to delete fota files but there is no adb devices in list, Please help if u can and sorry for bad english.
i tried to fallow this link-
http://forum.xda-developers.com/optimus-g-pro/general/guide-how-to-solve-stuck-cwm-twrp-t2852103

No success yet.
Tried to use LG mobile support tool to go back to stock but no success, what weird is in LG mobile support tool my phone shows as E988(Correct) when i connect with download mode on but when i m in cwm and try to connect to pc in device manager it shows as E980 and yellow exclamation mark. if i can connect to adb, my problem would be solve but how????? can anyone help?????:crying:

No upgrade item to fix
In lg mobile support tool when i try to upgrade recovery it says no upgrade item to fix, help me guys i cant fix my phone yet:crying:

If you're still stock at the cwm loop, try flashing cwm again with a cwm.zip file. That works for me every time when I get stock in the recovery loop.
Edit: Besides flashing the recovery zip file, you also need to flash your ROM and gapp from within the new recovery you just flashed.

yourseone said:
Tried to use LG mobile support tool to go back to stock but no success, what weird is in LG mobile support tool my phone shows as E988(Correct) when i connect with download mode on but when i m in cwm and try to connect to pc in device manager it shows as E980 and yellow exclamation mark. if i can connect to adb, my problem would be solve but how????? can anyone help?????:crying:
Click to expand...
Click to collapse
That is correct, get an ADB working folder in your computer (or download it from Google) and push a ROM with it, search for the commands on how to push a ROM through ADB, I'm not at home or else I'll point it to you step by step, try it on yourself and let me know if you need additional help.

Working now (Fixed)
Fixed it by flashing KDZ
First Method - http://forum.xda-developers.com/showthread.php?t=2420219
Also Thanks for replying guys, I thought OG Pro community is dead, but after searching for lot about it i found the solution. XDA Rocks ..... :good:

Help!!! Can't boot into recovery

Help, i installed the twrp recovery and went about installing a rom but when i went to wipe the phone i wiped everything. So now when i try to boot into recovery it just shows the lg logo with the l.e.d cycling. No idea what to do please help.

Can you get into download mode, If so you can flash the stock .kdz for your device with the lg flash tool and you will a stock functioning phone agin. Then you can root and install TWRP again if you would like just like you did the first time. But make SURE that you use CORRECT kdz for your device model remove the batteries and under you should she something like this eith the X being numbers or letters: LG-XXXXX find the .kdz for the XXXXX value and flash it with the lg flash tool

Thanks alot, its working but its taking its time still only at 14%

Your welcome if you still need help just ask

G3 boots into firmware update only
I recently updated my lg G3 ( Google patch update named Aug-18-2015 etc) and it started to malfunction with resets, crashing and eventually got it stuck in boot loop. Then it booted into a green screen that said "demigod crash handler/tz crash" thrice. Instead of a hard reset I decided to using the lg mobile support tool to fix it. During the upgrade recovery my phone went into download mode/firmware update. I could see the progress bar moving and then get stuck and my mobile would switch off. Took out the battery, disconnected and reconnected the phone and tried the process all over again but in vain. I repeated this at least 8 times and eventually gave up. Now my phone is basically useless and only boots into firmware update. Hard reset doesn't work either. Can somebody please help me fix this?
Android version : 5.0
Kernel: 3.4.0
Firmware : v20t-ame-xx

Go to the site: http://lgg3root.com/lg-g3-root/how-to-unrootunbrick-lg-g3/ and search for your device and message me back if it works

red bleud led flash
after i installed twrp latest edition it won't boot into it and it gives me the red and blue led flash even trough the steps by suing the download mode it won't work
HELP PLEASE
Best regards
Exray_NL

LG G3 D855 Stuck in MiniOS boot animation after trying to flash stock firmware w/ kdz

Hello. My LG G3 D855 originally ran CyanogenMod13 Nightly, and for some reason 6.0 Marshmallow GApps did not work. So I attempted to flash back to stock using LG Flash Tool. However after the flashing (successful), my phone would only boot into Download Mode, even after hard factory reset. Nothing worked, ADB, fastboot, nothing. So I then downloaded the older version of Flash Tool (2014), and the G3 D855 6.0 marshmallow KDZ. I believe this was successful, as now the phone changed from download mode to the MiniOS boot animation. However that is all it did, just displayed the animation. I attempted a hard factory reset (and the design of the screen had changed, which is why I assumed the KDZ flashing worked). That didn't help, and so I booted back into Download Mode, and tried flashing the TOT file for my device using the newer Flash Tool. However the new Flash Tool didn't even recognize my device, and so I, in one last hopeful effort, downloaded LG PC Suite to try and fix my phone, but in Download Mode or otherwise, my phone wasn't detected. I've tried flashing other versions of the KDZ on my phone, all unsuccessful. And of course there is no recovery I can access. Please any help would be extremely appreciated.

LG G3 Back from the dead (was hard bricked) - Need help to start over now

Hey guys
First, a little bit of history:
I own a G6 now, so I wanted to have some fun with my G3.
I rooted it (LGOneClickRoot), installed TWRP, installed LineageOS 14.1 and everything went pretty well.
The problem was that LineageOS 14.1 is terrible, huge lags, tons of bugs, so I tried installing another ROM through TWRP, I don't know what I messed up but I messed up and the flash failed. I dont remember exactly what I tried to flash after that but I failed again and then classic --> Stucked on LG boot logo, no recovery mode, no download mode, nothing.
So I used the popular fix for hardbricked G3, creating a short between test point and ground while connecting it to revive him, and it worked. I went with the whole procedure in BoardDialg and stuff. Kinda surprised by myself that I didnt go full-panic mode creating tons of threads everywhere lol, I managed to make it work even if it took me something like half a day of learning and work.
Now I'm back to stock Android 4.4.2, rooted with LGOneClickRoot again and everything is fine.
I mean... Almost everything is fine, because now I want to be able to install Magisk, and I found that Magisk is for Android 5+.
So there are some informations I need to gather before going further and risk a brick again (please no more short on the motherboard lol):
1- Can I flash a stock Lollipop ROM with LG Flash Tool in download mode using CSE Flash ? Is it a proper way to do it or do I really need to go through this boring TWRP recovery flashing again ?
2- where can I find such a ROM (stock Lollipop for d855) ? And which version to chose ? v20a, v20e, v20f, v20h, v20i, v20p, v20t, v20u, v20w or v21a ? I've been looking for hours now, hard to find reliable informations about all different versions.
Thanks for the read, I hope someone can help me

UPDATE:
I flashed a Lollipop v20f with LG Flash Tool and it's working fine.
I heard that after v20f, newer versions were "harder" to root so I sticked with v20f.
I'm gonna play around with Magisk now and see how it goes.

I'm in the same boat. I also went back to 4.4.2 via TOT. The I rooted and installed TWRP. how I want to restorel my RR 5.8.5 from a TWRP backup. My question is to I have to install the 35B bootstack before or after the restore or at all?

Hi,
Upgrade (LGFlashtool + CSE flash) to V30B
Follow this post ==>
https://forum.xda-developers.com/lg-g3/general/root-twrp-marshmallow-d855-30b-t3286268
Then you can install custom Rom ou upgrade to stock V30N (with root : there is a post about it)

Hey how did you do the unbrick process? I stuck at flashing kdz eventhough i have correct dll and drivers installed

hi,
Try LGUP instead of LGFlashtool (download mode and type *.kdz + select kdz file in LGUP)

Depends if you're hardbricked or softbricked. I was hardbricked so I had to create a bridge between 2 points on the motherboard and reflash everything one by one. I formated recently and didnt keep all these things but I can get into it again to try to help you.
EDIT: LGFlashTool isn't enough if you're hardbricked, you'll have to use other tools and open your phone. First step is identify if you're softbricked or hardbricked, google it you'll find your answer

Mine was hardbricked. I use shorting test point method and successfully flashing partition. Then I flash kdz using LG flash tool 2014, my phone stuck on boot logo. Then I do factory reset. Still same. Last option, I use LG UP. It stuck on LAF info with number on it. Is my LAF file damaged?

Hi,
With Boarddiag try this :
1-EMMC TEST Option "erase" ;
2- then Restore theses partitions and reboot in download mode and flash Kdz.
1)Boot
2)Aboot
3)BackupGpt
4)Boot
5)dbi
6)laf
7)PrimaryGpt
8)Recovery
9)rpm
10)tz
11)sbl1