Develop Bugs

[Q] F180 (vol up + power) does't work

Main information. F180, bootloader unlocked with teenybin, I'm on resurection lp rom.
Everything worked fine but I accidentally flashed the wrong file, now the phone is in boot loop. Though that is not the problem (I know how to fix it).
The problem is that there is no way I can access recovery. This happened to me before but I got lucky - computer detected the phone while it was in bootloop and I was able to use (adb reboot recovery). Next time I got lucky some kind of green screen showed up and from there I was able to go to recovery. Now i know that the most obvious way to go to recovery is through bootloader (vol up + power) but no matter how many times and in what diffrerent ways I try it I can't boot into bootloader it simply starts booting the rom... I am frustrated and have zero ides. Maybe you have some. Thank you in advance.
P.s.: i held down the power button for over 1 minute before attempting. And also download mode works.

If you can still boot into download mode you can try to flash the original firmware with the LG flash tool:http://forum.xda-developers.com/showthread.php?t=2797190
Don't worry you can use it for the LG Optimus G too:fingers-crossed:

Thank you for the idea, but I managed to solve my problem the same way as before. Use adb while the phone is in bootloop.

[Q] LG G E988 can't boot in download mode

Hi all.
I need help from a hivemind. I've got a LG G E988 with E98820B firmware. I've rooted it via ioroot (successfully) and tried to install custom recovery via freegee, and now my phone is not booting into download mode. If I try to reboot it from my PC using adb, I get "boot certification verify" error. Otherwise phone is booting fine into it's stock HK firmware.
So, long story short, I need download mode to flash stock european firmware but I have this strange error. Closest thing to solution of my problem is this thread , but I want something less radical. In case if something less radical exists.
Any ideas?

fautro said:
Hi all.
I need help from a hivemind. I've got a LG G E988 with E98820B firmware. I've rooted it via ioroot (successfully) and tried to install custom recovery via freegee, and now my phone is not booting into download mode. If I try to reboot it from my PC using adb, I get "boot certification verify" error. Otherwise phone is booting fine into it's stock HK firmware.
So, long story short, I need download mode to flash stock european firmware but I have this strange error. Closest thing to solution of my problem is this thread , but I want something less radical. In case if something less radical exists.
Any ideas?
Click to expand...
Click to collapse
Did you power off device via home power button? When you power down, then try to power back on just hit the power button then hold the plus and minus volume rocker while letting go of power button.

Yes. It casually boots up into rom. I think I somehow messed up my recovery. So is there any way to restore recovery, or flash custom recovery, without booting up in download mode?

fautro said:
Yes. It casually boots up into rom. I think I somehow messed up my recovery. So is there any way to restore recovery, or flash custom recovery, without booting up in download mode?
Click to expand...
Click to collapse
Enable USB Debugging
Connect mobile with PC and select LG Software (Wait for 1-2 minutes and let the drivers install)
Once drivers are installed, Run LG flash tool and start flashing KDZ. It will automatically boot it into download mode and flashing process will start. (If flashing stops / stuck at 4% and your phone is in download mode, remove USB cable, close LG flashtool.... connect USB cable again and restart KDZ flashing)

Tried. Now I can't boot into download mode AND can't boot into rom. And none of my computers see my phone in this state. Any possible explanations for such situation? And what to do about it..

LG G4 unauthorized device

Is there any chance to authorized device via adb, because i am stuck at boot loop or i can only aces to download mode (no aces to recovery no aces to safe mode or anything just those 2 things boot loop or download mode). Boot loader is unlocked, and i have custom recovery twrp recovery on the phone, but as i said i cant aces to this. All this happen after i flash xposed for android 6.
EDIT: i somehow managed to fix phone via LG Bridge.

ananas93 said:
Is there any chance to authorized device via adb, because i am stuck at boot loop or i can only aces to download mode (no aces to recovery no aces to safe mode or anything just those 2 things boot loop or download mode). Boot loader is unlocked, and i have custom recovery twrp recovery on the phone, but as i said i cant aces to this. All this happen after i flash xposed for android 6.
EDIT: i somehow managed to fix phone via LG Bridge.
Click to expand...
Click to collapse
Yes. First of all: Xposed version 79 doesn't work on LG G4 with marshmallow. You can use this zip file to get xposed working (but weather app doesn't work then - It's a test version)
Furthermore you can always access recovery mode by
Turn off device (or pull battery)
Press volume down and power button (hold it)
Release ONLY power button for 1 Sec, when LG logo appears
Then press power button again and hold it (while you still held the volume down button)
Stock recovery asks you to "wipe" the phone. Press "yes" and "yes"
TWRP will be entered then
In addition: There's an uninstaller zip in the original marshmallow xposed thread, which you can find here. Just flash it and xposed will be gone, phone boots again.
Hope this helps
Cheers

LG G4 won't stay in download mode. Bricked?

Hi!
Today, while using my G4 it shut down and did not not want to boot up anymore.
At home, when connecting it in download mode, I flashed a stock KDZ (been on Genysis rom before). It went smooth, but the screen kept showing the Life's good screen (it didn't even enter the animated part, which makes sound). Then I wanted to reflash it again, but it does not stay in download mode.
I can't force shut it down, I can only remove the battery, but once I place it back it powers on (doesn't stay off).
I can quickly put in the cable and volume down to enter download mode for a brief second, however LGUP, doesn't recognize it and after 2 - 3 second it goes on to the main LG screen.
Is there anything I can do?
Thank you

Same problem! Fastboot does not recognise it either when I do fastboot devices. My G4 is also the Taiwan version so no chance of unlocking bootloader. It can't even do a hard reset. Please help!

Open "device manager" on your computer (and keep it open) and see if the driver is the correct one and if it doesn't change during the flash or while you need it. Specially on Windows 10.

OLLEY102 said:
Same problem! Fastboot does not recognise it either when I do fastboot devices. My G4 is also the Taiwan version so no chance of unlocking bootloader. It can't even do a hard reset. Please help!
Click to expand...
Click to collapse
Please try a live Linux instead. On windows you will always have problems with drivers.

Wipe ROM and reinstall Android in LG Smartphone

Hi, I'm trying to find a way to try to recover an LG D680 smartphone. I have a weird problem with it. It used to get stuck on LG's Logo boot. I used Download Mode and LG Mobile Tool to fix it and update it. Everything was ok but 1 month later this happened again, but this time it cannot get fixed.
I tried to reinstall software through KDZ and flash tools (2014) in Normal and CSE mode. I tried Iusacell (AT&T) images (V10A_, V10B_, V20A_ and V20B_) wich are Jelly and Kitkat versions of images. Last I tried to reinstall with V20A_ Factory Free image and still problem, but now there's another problem. It seem that there are not really hardware issues since device is correctly recognized in Windows System, can enter Download Mode, LG Flash Tool can still manipulate hardware (Install, reboot and finish install). The new problem is that even after reinstalling any of the images it keep looped and stuck at the "Android Hard Reset" icon, the one of the Android with the red triangle.
I tried using fastboot and adb but devide is not recognized by fastboot device even after installing drivers.
Is there another way to completely wipe ROM and install System and Boot clean? I already have system.img and boot.img files, but can't find a way to do this nor what I do works.

Zoditu said:
Hi, I'm trying to find a way to try to recover an LG D680 smartphone. I have a weird problem with it. It used to get stuck on LG's Logo boot. I used Download Mode and LG Mobile Tool to fix it and update it. Everything was ok but 1 month later this happened again, but this time it cannot get fixed.
I tried to reinstall software through KDZ and flash tools (2014) in Normal and CSE mode. I tried Iusacell (AT&T) images (V10A_, V10B_, V20A_ and V20B_) wich are Jelly and Kitkat versions of images. Last I tried to reinstall with V20A_ Factory Free image and still problem, but now there's another problem. It seem that there are not really hardware issues since device is correctly recognized in Windows System, can enter Download Mode, LG Flash Tool can still manipulate hardware (Install, reboot and finish install). The new problem is that even after reinstalling any of the images it keep looped and stuck at the "Android Hard Reset" icon, the one of the Android with the red triangle.
I tried using fastboot and adb but devide is not recognized by fastboot device even after installing drivers.
Is there another way to completely wipe ROM and install System and Boot clean? I already have system.img and boot.img files, but can't find a way to do this nor what I do works.
Click to expand...
Click to collapse
If it is looping on LG's boot animation, then you should boot into stock recovery and do a factory reset from there - saved me from sending my E988 to service last time I flashed stock. Try one of these recovery combos: Vol Up + Power, Vol Up + Vol Down + Power, Vol Up + Home + Power, one of those should work. My E988 uses Vol Up+ Power - have to press both while device is powered off, and keep them pressed until capacitive buttons flash twice. Not sure how will that work on D680 though (is that a G Pro Lite?)

ShadySquirrel said:
If it is looping on LG's boot animation, then you should boot into stock recovery and do a factory reset from there - saved me from sending my E988 to service last time I flashed stock. Try one of these recovery combos: Vol Up + Power, Vol Up + Vol Down + Power, Vol Up + Home + Power, one of those should work. My E988 uses Vol Up+ Power - have to press both while device is powered off, and keep them pressed until capacitive buttons flash twice. Not sure how will that work on D680 though (is that a G Pro Lite?)
Click to expand...
Click to collapse
Yep! It's an G Pro Lite. I'm still trying some of th combinations. What is stock recovery? Should it show more options than just hard reset?

Zoditu said:
Yep! It's an G Pro Lite. I'm still trying some of th combinations. What is stock recovery? Should it show more options than just hard reset?
Click to expand...
Click to collapse
If it's anypart similar to ones found on E98x, it will have only hard reset, update install and reboot options. I really don't know much about Lite series, probably there is more info about recovery in their subforum here.