Team Win Recovery Project (TWRP) is an open-source software custom recovery image for Android-based devices. It provides a touchscreen-enabled interface that allows users to install third-party firmware and back up the current system, functions often unsupported by stock recovery images. It is, therefore, often installed when rooting Android devices, although it isn't dependent on a device being rooted to be installed.
This is the official build (beta) based on TWRP sources and xiaomi blobs ... fully working !
(Mi CC9 meitu Edition)
!!! IT'S NOT MY PROBLEM, IF YOU DON'T READ AND FOLLOW MY INSTRUCTION CAREFULLY, IF YOU DON'T HAVE TIME FOR THIS, OR IF YOU FLASH SOMETHING OR DO A MANIPULATION I DIDN'T MENTION HERE !!!
Installation Procedure (first time) :
- Unlock your bootloader ()
- Enable ADB from your Official MIUI Developer option
- Plug your USB cable to your Windows PC and type :
adb reboot bootloader
- type then :
fastboot flash recovery twrp-3.3.1-0-vela-final (auto-decrypt).img (rename your image just by twrp.img)
fastboot flash vbmeta vbmeta.img
fastboot reboot (keep Vol+ pressed until you see TWRP splash)
- Wait for decrypting ... (if already you set a lockscreen pattern or a fingerprint)
- Format Data (button on the right) + Type "yes" on the keyboard popup
- To boot TWRP from MIUI : reboot menu + keep Volume UP pressed.
- To boot from phone off : power button + Volume UP
TWRP can now auto-decrypt your crypted /data partition so you can make backup with no issue.
This is a big fix that prevent to loose your fingerprint and pattern ...
For MIUI users, you must flash the fstab.zip fix after flashing your MIUI rom !!!
Update : 2019-11-05
-version : 3.3.1-0
-stable and optimized : setting lockscreen pattern and fingerprint on the first boot is no longer needed !
BE SURE WHEN YOU WIPE YOUR DATA, YOU KEEP THE "4 FOLDERS BELOW + .layout_version". THESE ARE YOU ENCRYPTION DATA. IF YOU DELETE THEM, YOU WILL NOT BE ABLE TO RESTORE YOUR DATA BACKUP UNTIL YOU FORMAT YOUR DATA AGAIN.
TRICK TO SAVE YOUR LIFE : ALWAYS KEEP YOUR BACKUPS ON THE EXTERNAL STORAGE !!!
XDA : DevDB Information
TWRP, Tool/Utility for the Mi CC9 meitu Edition (vela)
Source Code 1 : https://github.com/TeamWin
Source Code 2 : Prebuilt Recovery Kernel from MIUI
Status : Stable
Release Date : 2019-11-05