Stupid me deleted the com.android.launcher2 apk file (located in system/app) thinking that my tablet will boot with another launcher I installed and now it doesn't boot up (gets stuck in loading screen).
Now, the tablet's chinese, so I haven't installed a custom bootloader.
I can only get to recovery mode.
I have a backup of everything, (made with an app) on my external SD card, so I did a fac reset (and a cache one), just in case. It did't work.
I need to manually copy a file in system/app via system recovery, without a Custom Bootloader.
I tried making a custom update.zip, with launcher2.apk in it by I get an error "Installation aborted" right after it starts authenticating it.
Is it possible to copy that file without having a custom bootloader, or is there another way to do this (adb commands).
PLEASE help me, I'm really frustrated right now.