Lg g3 Bootloop after stock update - G3 Q&A, Help & Troubleshooting

Hey Guys,
I am having some problems.
I unrooted my phone with " LG G3 Stock Firmware". Everything worked fine.
Then i switched to the lg suite to update my phone to a new version. (Somehow it don't find it with the app)
But now i am in the Lg Logo Bootloop.
I already did a Hard reset but it didn't worked out.
And if i try "Restore update errors" it says mobile divice
What can I do to update my phone or to prevent this bootloop?
Best wishes.

http://forum.xda-developers.com/lg-g3/development/boot-verification-failed-secure-boot-t3337280

Related

[Q] lg g3 hard brick.

Hello all.
I was charging my lg g3 Singapore version. Suddenly it reboot and cant boot up anymore.
Unrooted. Never install any tweak apps. I try hard reset boot back to same picture as attached. Any solution... I tried download mode cant get to firmware update page. Installed drivers on pc already. With lg pc suite.

[Q] My LG G Pro (F240K) stuck in the LG logo

Help!!! My LG G Pro (F240K) stuck in the LG logo.
I follow the link below to flash the Lollipop 5.0.1 for LG G PRO F240 K into my LG G Pro(F240K). It finished the update process but now stuck in the LG logo screen. I remember my original version is 4.0.x.. I didn't have a backup of my original kdz....
I just root my device but never flash any Rom before. Is there any problem to flash 5.0.1 into it?
I tried to download a Rom F240K10r_00.kdz to flash again. But still stuck in the LG logo. I don't know what to do now.
Link:
tech2mech.com/how-to-flash-kdz-lg-f240-f180-f160-lg-g-pro/
tech2mech.com/download-official-lollipop-kdz-firmware-lg-g-pro-f240-lsk/
Try 'CSE flash'
irt118 said:
Try 'CSE flash'
Click to expand...
Click to collapse
I use the LG update software and seem can get into the OS.
But no luck, my IMEI is lost....I cannot make the phone call now.......
What can I do now..?
Android information:
4.4.2
Baseband version
APQ8064/MDM9x15M
Kernel version
3.4.0
Software version
F240K20h
Gary_ said:
I use the LG update software and seem can get into the OS.
But no luck, my IMEI is lost....I cannot make the phone call now.......
What can I do now..?
Android information:
4.4.2
Baseband version
APQ8064/MDM9x15M
Kernel version
3.4.0
Software version
F240K20h
Click to expand...
Click to collapse
try flashing kdz again but now with "CSE Flash"
what kind "CSE Flash" sorry I am new in LG phone flashing.
I have facing this issue also My LG OGP (F240L) stuck on U+ logo (boot loop)
wesly.btm said:
what kind "CSE Flash" sorry I am new in LG phone flashing.
I have facing this issue also My LG OGP (F240L) stuck on U+ logo (boot loop)
Click to expand...
Click to collapse
"CSE Flash" will wipe all data in your internal storage.
I also had bootloop when downgrade to 4.4 from 5.0 with "Normal Flash", then I tried "CSE Flash" and It worked.
irt118 said:
"CSE Flash" will wipe all data in your internal storage.
I also had bootloop when downgrade to 4.4 from 5.0 with "Normal Flash", then I tried "CSE Flash" and It worked.
Click to expand...
Click to collapse
Is it work with LG OGP F240L Korea version (not root)?
My OGP not never root before, by facing issue when downgrade to Kitkat stuck boot loop LG U+.
Would you like guide to steps CSE Flash?
wesly.btm said:
Is it work with LG OGP F240L Korea version (not root)?
My OGP not never root before, by facing issue when downgrade to Kitkat stuck boot loop LG U+.
Would you like guide to steps CSE Flash?
Click to expand...
Click to collapse
yes, it will work.
Just follow this guide but choose "CSE Flash" at step 2.
Hi, sorry I am new for LG OGP. My LG OGP (no ROOT).
Actually do downgrade from Official Lollipop [F240L30C_00.kdz] via LG Support tools with installed success but NO SIM CARD-Emergency Calls Only appear on screen and have downgrade to Kitkat [F240L20h_00.kdz] using LG Flash Tool 2014, I have set with "CSE Flash" with LG Flash Tool 2014 [http://forum.xda-developers.com/showthread.php?t=2797190] but having Boot loop stuck On LG u+ logo. and have perform Hardreset Vol- with Power Button but not show Hardreset.
http://forum.xda-developers.com/optimus-g-pro/help/sim-card-emergency-calls-update-t3139657
irt118 said:
Try 'CSE flash'
Click to expand...
Click to collapse
Thanks a lot! It works after flash it by CSE. My IMEI appears again and OS is 4.4.2
So, Can I flash F240K30d_00.kdz to become 5.x.x?
Gary_ said:
Thanks a lot! It works after flash it by CSE. My IMEI appears again and OS is 4.4.2
So, Can I flash F240K30d_00.kdz to become 5.x.x?
Click to expand...
Click to collapse
my LG OGP F240L (U+ Korea) success to downgrade kitkat no boot looping but still No SIM CARD-Service Disabled
Dial 5457#*240#
[Preferred network mode]>LTE only showing on screen No SIM CARD-Service Disabled
[Preferred network mode]>WCDMA/GSM only showing on screen No SIM CARD-Emergency calls only
please HELP
wesly.btm said:
my LG OGP F240L (U+ Korea) success to downgrade kitkat no boot looping but still No SIM CARD-Service Disabled
Dial 5457#*240#
[Preferred network mode]>LTE only showing on screen No SIM CARD-Service Disabled
[Preferred network mode]>WCDMA/GSM only showing on screen No SIM CARD-Emergency calls only
please HELP
Click to expand...
Click to collapse
I just use CSE to flash the kdz ROM then every thing works....
LG Optimus G Pro E988 Bricked Issue
Hi there my friend I have bought LG Optimus G Pro E988 recently but 4G LTE was not working on it so I tried to update its ROM and while doing it unfortunately it bricked. Now when ever I tried to power on my phone it shows LG sign and reboot again and again and nothing pop up i tried many things with download mode but it does not work and it is also not going in recovery mode and I cant find its bootloader. Can you please help me this
Hi all,
Still confuse and not understand. By yesterday night after downgrade my LG OGP F240l (U+ Korea) and successful with Sim Card Disable I leave my OGP on desk until morning and low ?Then i try to OFF then pull out the SimCard and try insert the Simcard and ON my OGP fortunately thw simcard read and have signal but Service disable on screen. I have hope when the signal show. Just check the hidden code set the network show LTE. Try to WCDMA/GSM reboot the phone the issue FIX. Now my OGP fully work with Kikat and try to Flash again to Lollipop and successful my simcard fixed. Correct i am using CSE to flash and its work. I think the phone baseband installed try to stable and optimize it self first to network on my country.
Now my OGP running Lollipop (no root).
Regards,
Hey I have the same issue, not yet solved.
I was on F240L30C Lollipop and Want to Downgrade Because I am facing Screen Wake up issue (no issue when i was using KitKat 4.4.2).
I have downloaded the f240l20c_00.kdz firmware from pan.baidu.com , but after flashing my phone gone in to loop (Lg logo then android animation icon processing then reboots again)
I can't enter the recovery mode as well.
I have tried using CSE Flash but same loop again.
Can anyone Help ?
jpwall-cell said:
Hey I have the same issue, not yet solved.
I was on F240L30C Lollipop and Want to Downgrade Because I am facing Screen Wake up issue (no issue when i was using KitKat 4.4.2).
I have downloaded the f240l20c_00.kdz firmware from pan.baidu.com , but after flashing my phone gone in to loop (Lg logo then android animation icon processing then reboots again)
I can't enter the recovery mode as well.
I have tried using CSE Flash but same loop again.
Can anyone Help ?
Click to expand...
Click to collapse
Try CSE Flash again.
Thanks.
There was problem with firmware file itself. It was incomplete downloaded file. (downloaded from pan.baidu)
I have downloaded new file today from Lg and able to flash. Now i am on Kitkat.

H815L - Phone stuck on logo after update via LG Bridge.

Hey,
I have an Israeli Orange LG G4 - H815L. it's a non rooted device. after update via LG Bridge the device stuck on LG logo for about 10 minutes. i've removed the battery and turned it on and now it's stuff on boot loop.
I tried to flash with it LGUP but no success.... still stuck on bootloop.. is there anything else i can do before going to the disturber ?
thanks
Try hard rest it if didnt work then send it to be repaired

Bootloops on D855 after V30C update

hey guys, I updated my G3-D855 to V30C through lg pc suite, and after I updated it, I started getting bootloops a few times in a week, the phone just shuts down and restarts, I came from V30B (KDZ MANUAL UPDATE) to V30C and this happened, I did factory reset (with LG BACK UP and restore) and it didn't solve the problem.... Plus I got a huge battery drain which I didn't have before....(I am not rooted I have to say)
any ideas?
thanks
Adooda said:
hey guys, I updated my G3-D855 to V30C through lg pc suite, and after I updated it, I started getting bootloops a few times in a week, the phone just shuts down and restarts, I came from V30B (KDZ MANUAL UPDATE) to V30C and this happened, I did factory reset (with LG BACK UP and restore) and it didn't solve the problem.... Plus I got a huge battery drain which I didn't have before....(I am not rooted I have to say)
any ideas?
thanks
Click to expand...
Click to collapse
I have got the same problem here. Reinstalled the latest firmware and while it looks good for a while, the bootloop keeps coming back.

[Help] LG G4 H815P stuck on Firmware Update

Hi,
I tried to upgrade my LG G4 H815P with this thread:
https://forum.xda-developers.com/g4/development/h815-nougat-stock-locked-bootloader-t3709119
The process with LGUP was ok (upgrade mode), but after the first reboot the phone stucks on LG logo, so I tried to use refurbish mode but the process throws a error 0x2000.
I tried a lot of solutions but the problem continues.
Maybe you know a tot file with android 6 to restore my phone with LGUP?
https://forum.xda-developers.com/g4/help/help-lg-g4-h815-lgup-failure-t3640936
https://forum.xda-developers.com/g4/help/lg-g4-stuck-firmware-update-screen-t3675998
https://forum.xda-developers.com/g4...bootloader-t3709119/post74946652#post74946652
Seems like the restore only works with H81520p_00_0314.kdz
Solved!

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