[LG V20 Guides, News, & Discussion] bernavaldiesel1:
Hello, here is a brief explanation to install stock rom pie with screen recording, which also contains some cool settings. It does not differ in any way with the official stock v30e, (kdz file) you can get on the website of lg firmwares or other places. just the screen recording and i think i remember the update patch is not the same either. The installation of this .up file has to be done from the 20k firmware, otherwise it does not work.

in general features what we will do will be:

1-we make downgrade to android 8, with refurbish option and kdz 20k

2-quickly configure our device and

3-update the device with the option fota upgrade and .up file.

read it a couple of times, to familiarize yourself with the process, if this is your case and you have not done it before.

Donwload this file from mega,weighs 1.91gb;

https://mega.nz/file/WQkTjbrA

Password f1T67seph-BxIOcivfpcFFxiCueHQgukTiK-e820eEo

>Download 20k kdz for f800l from lg firmwares.

enable usb debugging and back up your files. You are warned, since by downgrade you will lose everything in the internal storage, if you are in the latest version 30e of android 9. once done extract zip to a folder. first install the lgup .exe (if you don't have it installed) and then the .exe (msi) if you don't have it installed either. IMPORTANT: you have to find out how is your arb (anti-rollback) on the device.

write to the device's dialer.

*#*#244773825625#*#*

once you enter these numbers and symbols, a window will open and, sliding down you will find the tab; antirollback version. everything that appears in red should be 0 (zero).

*****IMPORTANT*****

If so, you can continue, if not, you will turn the device into brick.

***********************

the zip also contains the .up file,another called wpdapi and finally lgup_common.dll.

copy and paste these two files (wpdapi, lgup_common.dll) in the following path; local disk / x86 program files / lg electronics / lgup / model / common, If you have installed 1.0.28.5 (.dll), this is replaced by the one I leave you, it is a version for lg v20 f800 s / l / k, and it is version 1.0.36.0. Pasting into the common folder will add the wpdapi file and you will replace it when prompted by lgup_common.dll.

What I did before pasting these files in the common folder was to copy and save the version 1.0.28.5 .dll file in another folder, in case the connection between the phone and the lgup tool fails. so you don't have to run the msi .exe again just change it.

Having everything ready we connect the device to the pc, it doesn't matter if it is on, we will open the lgup tool, select refurbish and the kdz 20k. we wait for it to finish.

We quickly configure our device, you will be in android 8, enable usb debugging and reconnect to the pc.

this time we select the option fota upgrade, and the .up file of the zip and flash with the mobile on and without losing sight of the screen. I recommend having the screen timeout always on or in 5 min.

You will see that lgup freezes at 4 percent, but it is normal, soon a warning will appear in blue, "fota upgrade easy", on the mobile screen we press the back button and we go to the main screen, we wait ... he will only update. look closely at the screen and let it finish.

and done !, it has not been so brief. a big hug to all.

Video: https://youtu.be/Qc5loYw9MFo

notice: how to delete or remove dual clock on pie rom.

I have rescued this way to remove the dual clock from the lock screen of an xda member. all credits to him [MENTION=10612155]vanhoavn[/MENTION].

1.download app called setedit(settings database editor) from google play and install it.

2.activate developer options and usb debugging, connect to pc. file transfer.

3. open command window (cmd) in adb folder and type

4.adb devices, adb shell and type

5. pm grant by4a.setedit22 android.permission.WRITE_SECURE_SETTINGS

6.hit enter

7.open app setedit, select SECURE TABLE in the drop-down on the right

8.Look for the" roaming _dualclock" option and change the value to 1.

9.done, Lock the screen and unlock with two taps and see the change.

tested today August 25 with the update 30h.

Logically if we do a factory reset this change will return with both watches.