I have TECNO CX Air and It's running on Ported XOS 2.2 ROM and There is a system app called MgzKeyguard. The app makes multi wallpaper on the lock screen when I swipe from left right.
I wanted to change the stock/default wallpaper found on the app @res/drawable/drawable xxhdp-v4 and I replaced it via Apk editor pro them finally When try to install it says App not installed.
Please help me!
Remember that:-
I tried it to install via TWRP the flashing was sussfull but when I reboot my phone it becomes full black without no wallpaper on the lock screen
I also used Zarchiver to replace the stock wallpaper found on the above directory.
For the TWRP method first I backed up my original MgzKeyboaed app using Zipme app and then I remove original MgzKeyboatd app from the created zip via Zipme with the parsed one.