Xiaomi Mi 9 | cepheus
Model :

Xiaomi Mi 9

Status :

Maintained

Release :

monthly

Maintainer :

nhansp

Codename :

cepheus

Version :

fifteen

Latest Release :

25 June 2025

Latest Build :
Download
XDA Thread :
XDA
Recovery :
Download
Previous Builds :
Archive
Changelog
This is Android 15 QPR2 with June 2025 security patches

===== 25 June 2025 =====

Notes:
- Dirty install might be fine from previous official build
- Format Data could be required in other scenarios, check the XDA thread
- Play Integrity spoofing is back with keybox support

Device:
- Switch back to old kernel again
- All partitions are ext4 again

Notable ROM changes:
==============================
[Expressive Design] expand collapsing toolbar by default
[Expressive Design] fix ActionButtons click listener application
[Expressive Design] fix battery usage layout
Evolver: Add Expressive Design switch (force stop Settings app to apply changes)
Evolver: Add switch to spoof QSB
Evolver: adjustments for material expressive design
Merge June 2025 security patches
ProcessList: catch exceptions when unfreezing starting process
ProcessList: fix start process failure for frozen system apps
Settings: Use M3 slider for discrete seekbars
SettingsLib: Animate the UsageProgressBarPreference
SettingsLib: Redesign seekbar according to M3 slider
SettingsLib: UsageProgressBarPreference: Fix multiple NPEs
SettingsLib: fix expressive design
display: allow changing HDR brightness intensity
version: Uprev to 10.7
Instructions
Installation Steps:
  1. Your device's bootloader needs to be unlocked. You can research how to do this for your specific device model online.
  2. Download the following files for cepheus:
  3. Boot into bootloader.
  4. Flash the images required to boot Evolution X recovery:
    fastboot flash recovery recovery.img
  5. Reboot to recovery.
  6. While in recovery, navigate to Factory ResetFormat Data/Factory Reset and confirm to format the device.
  7. Go back to the main menu and navigate to Apply UpdateApply from ADB.
  8. Sideload Evolution X:
    adb sideload 1
  9. (Optional) Fully reboot to recovery and navigate to Apply UpdateApply from ADB to sideload any addons:
    adb sideload addon_filename.zip
  10. Reboot to system and #KeepEvolving.