Develop Bugs

[Q] stuck in lg logo

hello guy & girl
i have CM 11 on device
i try downgrade to stable CM 10.2
in recovery mod i was format data & format system & reset factory and then wipe cache and next flash the cm 10 .2
then reset the device and cm 10. 2 up
but have a little problem with network and wireless
again instal my backup up of clockworkmod in recovery mood and restart but this time the device stuck in lg logo
now i cant go to recovery mod and the rom not runing
only i can go to downloading mod
sorry for bad english

Just flash a kdz with flashing tool and you'll be back to stock rom..

LG E980 Soft Brick

Hello All,
I had root my font through this thread http://forum.xda-developers.com/showthread.php?t=2362657 and then install freegee to install TWRP recovery after that I have tried to install this http://forum.xda-developers.com/optimus-g-pro/development/lg-g3-port-optimus-gpro-e980-t2827464 rom. I wipe the delvik cache and data then I flash the rom and superuser zip which is attached in the thread this but after rebooting device showing me this msg on the LG logo " secure booting error, Device unlock so boot sucsess!" and stuck on LG logo. Can anybod y pls tell me how can I flash this rom or another 4.4 rom ? Phone is booting into TWRP recovery, should I flash another rom ?
Thanks in advance

imk79 said:
Hello All,
I had root my font through this thread http://forum.xda-developers.com/showthread.php?t=2362657 and then install freegee to install TWRP recovery after that I have tried to install this http://forum.xda-developers.com/optimus-g-pro/development/lg-g3-port-optimus-gpro-e980-t2827464 rom. I wipe the delvik cache and data then I flash the rom and superuser zip which is attached in the thread this but after rebooting device showing me this msg on the LG logo " secure booting error, Device unlock so boot sucsess!" and stuck on LG logo. Can anybod y pls tell me how can I flash this rom or another 4.4 rom ? Phone is booting into TWRP recovery, should I flash another rom ?
Thanks in advance
Click to expand...
Click to collapse
try flash another rom like Cm11 from SD card.
if it still boot into recovery , use this guide to fix recovery boot loop
http://forum.xda-developers.com/optimus-g-pro/general/guide-how-to-solve-stuck-cwm-twrp-t2852103

[Q] Lg G pro f240L is stuck at recovery mode

My Lg G pro f240L is stuck in recovery modem when I reboot my LG Optimus G pro f240L it goes to recovery mode auto, and stuck in that mode. Is there any solution please help me Thanks Every one. I am new here

Try flash what ever recovery you're (cwm or twrp) using again from within the recovery.

iamaliiraja said:
My Lg G pro f240L is stuck in recovery modem when I reboot my LG Optimus G pro f240L it goes to recovery mode auto, and stuck in that mode. Is there any solution please help me Thanks Every one. I am new here
Click to expand...
Click to collapse
we need more information: Questions, when did this happend, just booting it normally or after flashing a rom or restoring an image? Also, if you flash/restore, which rom? Many times the roms will work with all Optimus G pro versions but you have to manually load your modem, in this case your modem would be for the F240. You can download your modem (google your modem model you will find it) and copy it to your SD card then flash it
other questions: have you rooted? did you flash CWM or TWRP?
This all assuming this happend after you flashed a rom. If you didnt then you just might have to do a factory wipe/recovery.
Lets us know and we will help :cyclops:

Anyone that's stock in the recovery loop, try flash the recovery and then reinstall the rom and the gapp files first. This is much easier, and it works for me every time. It's much easier than try flashing the OEM ROM with the flashing tool, and then flash the custom ROM again. All you have to do is find the zip file of which ever recovery you're using, loop back to the recovery, flash the recovery zip file, then the custom ROM and the gapp, reboot, vola! You have just fixed the dreaded recovery bootloop error.

my lg g3 d855 was bricked

my lg was running stock kitkat then i rooted it correctly then i installed TWRP
i rebooted into recovery then i wiped all and format all
then i restart and i stucked into lg boot
i still can acsess download mode
Help please

Why did you wipe and format everything without flashing a new rom? Can you still access TWRP? If so, just pick whatever rom you want to flash and flash it.

ahmedatala said:
my lg was running stock kitkat then i rooted it correctly then i installed TWRP
i rebooted into recovery then i wiped all and format all
then i restart and i stucked into lg boot
i still can acsess download mode
Help please
Click to expand...
Click to collapse
Lol, are you wondered by the facto you can´t boot android?
Enter twrp again please and reflash a rom

LG G3 F400L those who have problems installing android 11

Hi there I created this thread for the people who have a hard time with their lg g3 f400L
I know this issue is kinda late in 2021 but I hope I can still help someone.
So lets start
I'M NOT RESPONSIBLE FOR ANY BRICKED DEVICE! YOU HAVE BEEN WARNED
I just want to share this for those who have F400L specific device!
There are many problems that I faced when trying to load a custom rom android 11 in my device I always get the error of boot certificate error or something or the twrp doesnt recognize my phone as f400L when trying to load a android 11 custom rom because it needs to have the latest twrp in order for it to continue the installation of the rom. Tried every single Official TWRP and nothing seems to work so I tried using unofficial TWRP.
So this is my solution
1. Restore to kitkat.tot the name of the file is this "LGF400LAT-00-V10a-LGU-KR-MAY-18-2014-0" for f400L use LGUP for this (I haven't tried using lollipop for marshmallow it's a nono I get the MISMATCH SIG LEN error)
2. root using purple drake lite
3. once rooted install twrp using the bumped! the method in xda "twrp-2.8.0.0_f400-signed.img" using flashify or any other method you want.
4. download "flashable-twrp-3.3.1-20200315-f400-themed.zip" from "https://forum.xda-developers.com/t/recovery-3-3-1-abandoned-twrp-for-lg-g3.3813552/" scroll down to the download section and click the "MEGA (recommended)" link there you can find the zip file
5. once downloaded put it in your sd card boot to twrp and locate and install the "flashable-twrp-3.3.1-20200315-f400-themed.zip"
6. once installed reboot to your recovery using twrp
7. if it boots to a black screen remove the battery and try to access your recovery mode
8. if it boots to recovery then you are good to go! (F400L method of recovery is holding Volume down + Power button once LG logo appear let go of the button and immediately press the volume up + volume down button and a factory reset image will appear just press yes and yes and now it will boot to a red twrp)
PS: my lg g3 F400L is kinda tricky to boot to recovery so in order for the buttons to work I press it to the edge as hard as I can, if your lg g3 is like mine send me a message I will help you.
9. In twrp wipe system, cache, data, dalvik cache
10. install any android 11 rom or lineageOS rom
11. install android 11 gapps
12. wipe cache and dalvik cache
13. reboot!
And wait for it to load up mine takes about 10 mins or so.
I just want to thank :
HardStyl3r
I didn't know that the answer to all of my problems is only his unofficial twrp! The unofficial twrp is abandoned so I hope anyone out there can update it.

Thanks

Thanks for your detailed tutorial!
It works on my LG G3 F400s (after installed twrp 2.8.0.0 it became typical F400)! And I can have a taste of Android 11 on my g3 finally.
I follow all your steps expect step one. (My phone was still Android 4.4.2)
For those whose devices are different from F400l can follow all the steps expect changing the file (.tot) from f400l to like f400s or k at step one.
Thanks