LG G3 F400L is going dead after failed rooting - G3 Q&A, Help & Troubleshooting

as i say it to title... i tried to root via LG G3 one click method and i failed (i dont know why, I followed each step)... after this failure my mobile stuck on "U+ LTE 8" (after the LG logo). By my ignorance i tried to unbrick it via: "How to Unroot/Unbrick LG G3!"
but again it stuck at 94% of the process and after 15 seconds my mobile it turns off once and good... it didnt charges and generally is dead...Totally dead. Is there something that can i do?
Sorry if there is already posted a similar question but i couldnt find a solution.
Any one that can help?

Related

G3 stucks in Download Mode

Hello Community,
Yesterday my G3 stucked in a Bootloop without changing anything. Than I wanted to repair it with the LG PC Suite. This failed with the message "Assert" multiple times. Now it stucks in the download mode. Can I repair it? More important are the files on the G3. Is there a way to get them?
PJF16 said:
Hello Community,
Yesterday my G3 stucked in a Bootloop without changing anything. Than I wanted to repair it with the LG PC Suite. This failed with the message "Assert" multiple times. Now it stucks in the download mode. Can I repair it? More important are the files on the G3. Is there a way to get them?
Click to expand...
Click to collapse
Try this:
1) Remove battery
2) Hold down the power button for 30 seconds with the battery out
3) re-insert battery
4) Try turning it on again.
If that doesn't work, do a hard reset. You can find multiple posts on how to do it. Hope this helped!
Maybe I can help somebody with the same problem. I solved the problem with the following steps:
I setted up a new Windows 7 x64 PC. It must be Windows 7!!! No Windows 8 or other shiny things.
Installed the driver
Flashed a compleltely new firmware (.tot) over the old (!) FlashTool.
Hi guys. First, sorry my poor english. I'm Brazilian.
I make a firmware upgrade from LG PC Suite, 4.4 KK to 5.0 L. Problem is, the upgrade failed, and now my LG G3 are stuck in download mode. I try make this upgrade from LG Flash Tool but the problem persists, 65% appears in the screen of LG G3 a message "ASSERT" and reboot to download mode screen. Help, please?
plyndagos said:
Hi guys. First, sorry my poor english. I'm Brazilian.
I make a firmware upgrade from LG PC Suite, 4.4 KK to 5.0 L. Problem is, the upgrade failed, and now my LG G3 are stuck in download mode. I try make this upgrade from LG Flash Tool but the problem persists, 65% appears in the screen of LG G3 a message "ASSERT" and reboot to download mode screen. Help, please?
Click to expand...
Click to collapse
Although I have never come across this, using this site to download the right KDZ and using this thread to flash that KDZ may solve your problems. There is no harm done in trying this and you can be sure that it is the right file.
LG G3 Boot problems after download mode
Hello!
Sorry revive the topic but it was the only one who found a similar problem, after searching lot on google.
I have a LG G3 D855P. Yesterday he went out and restarted many times, but worked for a short time.
I can use the BoardDiag, but when I restore the D855P20C_00.kdz .kdz, to reach 36%, the cell phone goes off and does not return. I need to take the battery cable, so that it returns to the download screen, but still, to get 36% he goes again. Have made sure that the .kdz file works properly.
I followed the tutorial presented in this video.
/watch?v=gHAA5e2FQbU[
/watch?v=YsGHRKNT8EM
Porfavor guys, I'm desperate.
kernel adiutor. turn off cpu2 and 3. (notice it starts like CPU0,CPU1,CPU2,CPU3) you will thank me later.
let the 2475mhz max speed. set it on boot.
PJF16 said:
Hello Community,
Yesterday my G3 stucked in a Bootloop without changing anything. Than I wanted to repair it with the LG PC Suite. This failed with the message "Assert" multiple times. Now it stucks in the download mode. Can I repair it? More important are the files on the G3. Is there a way to get them?
Click to expand...
Click to collapse

LG G3 F400K Hard Reset Problem

So I was trying to mod my Camera. I followed a certain video which I thought was doing the steps right until I was able to read one of the comments. Unfortunately, after I rebooted my phone, it won't go further but the startup logo. I am a beginner in these kinds of things. How to do a hard-reset in LG G3 F400K? I have searched a lot of tutorials which are all similar but won't work with my phone.
Please halp :<

Boot loop problem

Hi !
I'm having a big problem right now. Few days ago, I tried to Root my phone everything was fine. The next day I wake up and go on my phone and there is a boot loop when I try to open it and it never ends. It's a loop at the LG life's good logo.
Few things I tried so far before coming here:
1) I tried all this :
http://forum.xda-developers.com/showthread.php?t=2785089
When I do it with LG Flashtool 2014 it goes to 4% then it stops/crash.
When I try with LGFlashTool I get : Model Information: Check FAIL! (but I put the good model in the files)
2) I tried a hard-reset but when I do the hard-reset it goes back right away to the Boot loop.
3) I tried with LG PC Suite, but the it says Mobile Device not found so I can't get it to repair with LG PC Suite.
I don't know what to do anymore.
My phone is a LG G3 D852 (Canadian)
Hopefully you guys can help me out here. Thanks a lot
Well apparently doing it on another computer fixed the problem!

Full unroot got me stuck

Hello, I wanted to unroot my phone from SuperSU, using the Fully unroot thingy that it has. After letting it be for awhile i realized it was just only at the bootup screen where the LG logo is and blue light was slowly blinking. Now I've tried LG flash tool to get me back to factory settings and I've tried different .kdz files, none of them seems to work. Furthest I got: I saw the firmware's name on my phone screen for a few seconds and then it dissappeared. Always LG Flash Tool fails after 9% and it says "Upgrade stopped due to an error." I have no idea what to do anymore with my phone. Any help is appreciated! Computer only recognises my phone when it's in firmware update mode.
Use LG UP...
Noksucow1 said:
Use LG UP...
Click to expand...
Click to collapse
Lg UP didn't work aswell, didn't recognize my phone, I already got it with LG Bridge, thanks!

Phone stuck on startup/logo screen

Hello everybody! I have a problem with my phone(LG G3 beat D722p), well, my phone is stuck on startup/logo screen. When turn on my phone appears LG logo and then appear the logo of my company and here is where my phone is stuck.
I tried install his KDZ (I used LG support tool) with "Normal flash" to not lose my data but this doesnt work. In the past I have done the same and it works but not this time. I could do a hard reset but if I do that I will lost all my data (and is very important). I need help please! I need recover all that information.
Mmm download mode maybe?
PD: Sorry for my english, but this is not my native language
Well, this is the G4 subforum for The LG G4 but I'm help u out real quick
1. Use LgUP (Recommended) and simply upgrade with Ur kdz. I got mine from storage cow. Hopefully ive helped.

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