Complete tutorial to flash custom ROM on Xiaomi Mi 9 (cepheus).
This tutorial are using Evolution X custom ROM, if your using other custom ROM the steps are the same
Prerequisite
- Use at your own risk! I am not responsible for your actions
- Unlock bootloader is a must
- Backup EFS Modem
- Make sure your on the latest firmware
Video Tutorial
Next
File Needed
- ADB & Fastboot
- Custom Recovery
OrangeFox-cepheus-A14RetrofitMetadata-28012024 | TWRP-cepheus-A14RetrofitMetadata-28012024 - Firmware Update
Mi 9 China Firmware V12.5.6.0.RFACNXM - Cepheus Evolution X Custom ROM (I'm using evolution_cepheus-ota-uq1a.240205.004-02160653-OFFICIAL.zip
- Gapps (If you'r using vanilla based)
Instruction
- UBL
- adb reboot bootloader
- fastboot flash recovery.img
- Boot into recovery manually (vol up + power)
- backup EFS Modem
- wipe data, dalvik
- format data
- reboot recovery
- flash FW Update (if needed)
- flash rom (i'm using ADB sideload)
- format data
- reboot system