LG G3 D850 (AT&T Variant) Bootloop after Stock Firmware Restore - G3 Q&A, Help & Troubleshooting

Hey guys,
I used this guide to restore the stock firmware: http://forum.xda-developers.com/showthread.php?t=2785089
It didn't succeed. Near the end, when phone rebooted, it got stuck in a bootloop.
I see the LG logo, the android man for a few seconds until it restarts again.
What should I do? I tried running the factory reset but that too does nothing but reboot it (again in the loop)

I am also having this same problem, if anyone could help/shed some light that would be great

Me too. I take days trying to find the solution.

Related

Phone stuck on LG logo.

I had messed my phone and reinstalled the stock rom using flash tools. it completed successfully but phone does not load, its stuck at lg logo.
any suggestion is highly appreciated.
problem solved.. Didnt do anything different, just tried the same steps 3-4 times, luckily it worked.

[Q] Bricked G3

Hi everyone, new member. Recently my g3 got in a bootloop so i hard reset it. Everything seemed to work fine but after a short time the device used to get stuck and restart. I followed a guide how to revert back everything to stock but something went wrong and the device got stuck on MiniOS and then Reset Status 2.
i tried to fix it by flashing it with .kdz file but for some reason now when i turn it on it says: Secure booting error and the screen turns black and the led starts flashing red and blue.
I cannot access download mode cause it goes straight to the lg logo and black screen but u can access recovery mode. i already tried a hard reset but its no use as the device gets back to the black screen.
Any help would be immensely appreciated as this is my second g3 in 4 months and im tempted to throw it away.
Thanks and good day
Post your device model variant (D850, D851, D852, etc.). Also check out these two threads...
[Q] Bricked LS990 - Can't access recovery or download mode ...Specifically post #16
http://forum.xda-developers.com/sprint-lg-g3/help/bricked-ls990-access-recovery-download-t3053985
[q] lg g3 d855 hard bricked no download mode or recovery!
http://forum.xda-developers.com/lg-g3/help/q-lg-g3-d855-hard-bricked-download-mode-t3090911

[Q] [HELP] LG G3 Random Reboot then Boot Looped

Hi guys,
My sister's LG G3 had this weird bug where it restarts itself every time the Mobile Data is turned on. Several days after that it got stuck in boot loop, hell, it doesn't even enter the boot animation. It just completely restarts after the LG logo. I tried factory resetting the phone, which should've worked from my experience, but alas it still boot looped.
I wanna try flashing the stock firmware via Max Lee's tutorial but since the internet in my office is weak, I won't be trying this soon. Just wanna ask, is this a common problem since I saw many threads about this in Google Search? Is there a way to restore the phone without downloading a new firmware? What seems to have caused this problem?
Also what is the most stable custom ROM for the G3? The LG Stock one is soooooooo heavy. Thanks guys.

I tried to ROOT and now phone wont boot up. Did I brick?

I tried the second method from this link ( http://forum.xda-developers.com/lg-g3/general/guide-root-method-lg-devices-t3129197 ) with a tmobile lg g3 on 5.0.1 non rooted. Followed the steps and and everything worked good. final step was to reboot the phone and now my phone is not booting up. I am just stuck at the LG life is good screen and it flickers and fades to black. please help. I don't know what to do.
When i try to get into download I get that little box that say download mode but then after that it is just a blank screen. Please HELP
I was able to restore 20G back in my G3. But now the screen goes black within a few seconds. But the buttons still work with the black screen. I think I am still soft bricked. I am not sure though. Any help or advice?
Bricked LG G3
Is your device rooted? Can you open TWRP? If you have TWRP you can go in and install a custom rom.

Sudden death of G3

Hello i have Lg G3 D858HK went unresponsive after using facebook apps while listening to the music.
It completely unresponsive and i pull out the battery and turn it on.
Only blank screen with blue and red led sign. Is my motherboard problem?
I tried to boot into twrp and reflash the rom i used which is Fulmic 8.0 and
same problem blank screen.
I start digging into countless of thread like LG G3 Hard Brick Recovery
I managed to flash partition using extracted .tot from LGD858HKATv10d, still it won't boot.
I continue with LG flash tool 2014 on download mode with trial and error with the problem always stuck at 4% S/W upgrade
and keep continue to ask me to disconnect and reconnect the phone. Somehow i managed to flash firmware
using new firmware D858HK30b_00_0906.kdz.
I thought the problem is gone, now it stuck on bootloop and sometime with dead android guy with warning marks on his body.
I do factory reset still not working.
Is it i flash the wrong kdz file?
I have clueless right now as where to seek help. I don't know what is the actual problem
motherboard or software.

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