I decided to downgrade from Android 7.0/Nougat back to Marshmallow, so I flashed the H850 .kdz file using LG UP to downgrade. Unfortunately it failed and now my phone only boots to download mode.
I have tried to boot normally and into recovery mode, but I am taken into download mode each time. Any help?
Edit: Fixed by plugging into LG Bridge. Bridge detected that it was running Marshmallow and updated it to Nougat, correctly restoring the software.
to downgrade follow
http://forum.xda-developers.com/showthread.php?t=3511930
Related
Hello all, i used yesterday de CWM software, my Lg was rooted, and i just tried install a recovery mode. Afther this i got Security Error.
I saw all way to fix on internet but my phone i can only put on S/W Upgrade mode, no Download Mode, no master reset, nothing.
Someone can help me how can i use the S/W Upgrade mode to fix it?
acipriano said:
Hello all, i used yesterday de CWM software, my Lg was rooted, and i just tried install a recovery mode. Afther this i got Security Error.
I saw all way to fix on internet but my phone i can only put on S/W Upgrade mode, no Download Mode, no master reset, nothing.
Someone can help me how can i use the S/W Upgrade mode to fix it?
Click to expand...
Click to collapse
S/W update mode is enough to do offline flash your kdz or recovery your phone via LG mobile support tools. Please select one of those 2 methods to recover your phone.
You need to unlock bootloader before install custom rom or recovery.
Take the kdz files from cmahendra's thread and use S/W mode to flash it.
Please don't forget to unlock your boot loader next time.
Hi all,
My LG G5 is in a bootloop and I cannot even access the recovery.
I guess I made something very, very stupid. Can anyone help me? Please??
Here is what I did:
- Android 6.0 stock ROM (v10i)
- Encryption is on
- unlocked bootloader
- rooted using the official LG way => everything worked fine
- installed latest TWRP => everything worked fine
- entered TWRP and installed Nougat bootloader (LG-H85020K-Flashable.Bootloader.zip) from the v20 upgrade (I actually planned to installed FulmicsROM-4.5 and the manual said I need the Nougat bootloader)
=> bootloop
The device keeps saying "The device software cannot be checked for corruption. Press The power key to pause boot". I did that and ran
fastboot devices
on my Windows PC, but no devices showed up. I have used fastboot in the past, so I am sure that the drivers work.
I also tried LG Bridge, but it does not detect anything.
Does anyone have any idea how I can rescue my device?
Regards
Clarenze
Yippee! I found a solution:
- install LGUP + drivers
- turn off phone
- hold VOLUME UP key and connect USB connector to PC => Phone displays "Firmware Upgrade"
- start LGUP => LGUP detects the phone and allows to flash a kdz file
My phone works again and the day is saved!
So I am new to the android hacking scene and tried to root an LG K7. It's not a very high value phone, but I wanted to try to install some linux kernel on it for developer use.
I followed this guide here: https://forum.xda-developers.com/lg-k7/how-to/guide-lg-k7-ms330-concise-tutorial-t3722050
I got to the point where you erase all partitions and use LGUP to flash a rom. LGUP won't recognize the phone when it's in download mode so now I can't flash a rom or boot into the phone because the firmware was erased. It's stuck in a bootloop of the LG screen and I'm not sure what to do. I can enter download mode but I can't enter recovery mode. I installed all the drivers for my device as well as the LGUP drivers. It says the phone is an unknown model. Please help!
If your LG G6 G600L bootloop when trying to use and can only be saved by charging the phone.if cant use lgup to reflash stock firmware.use lg bridge and if the problem still there after flashing using lg bridge.do what i do.try to enable usb debug.enter adb and check the devices using adb devices.if its there proceed to enter this code.adb reboot recovery. and on your phone it will say erasing and will boot and the phone is fixed.all data will be lose thought
i tried to flash the PIE US99830b TWRP zip (was on OREO h) via TWRP. Got stuck at V30 boot logo. OREO was correctly flashed last year and havent had any issues.
Attempted to factory wipe via power+vol down and it goes back to boot screen. I also cannot power down the phone. I was able to get to download mode by usb+vol up after the factory wipe screen. I've tried 2 different versions of the patched LGUP. One being the pie version and the other, the original version i used to flash OREO. Both say no handset connected. I see no device in device manager on my pc. I know my usb cable is working because the device will show up when i plug the usb in during the boot logo hang.
Download screen shows:
Unknown B35
Unknown / E /L / RQ
is my device hard bricked?