
TeamHorizon's XenonHD ROM builds for Xiaomi Mi 9 SE (grus)
https://www.xenonhd.com/
XenonHD is a custom firmware aka ROM for various Android devices. It is based on LineageOS 16.0 with additional features, performance and battery life improvements.
The idea behind XenonHD is to give users a ROM that is "blazing fast, rock stable and buttery smooth".

Device Source:
android_device_xiaomi_grus
device_xiaomi_sdm710-common
kernel_xiaomi_sdm710
vendor_xiaomi_sdm710-common
Download Links:
Recovery: TWRP
ROM: Experimental | Official
Gapps: opengapps.org
Changelog: Experimental | Official
Flashing Instructions:
To install this ROM you will need to have a latest custom Recovery such as TWRP installed.
- Copy the downloaded ROM to your phone.
- Boot into your recovery
- Back up your ROM
- Make a full wipe (system, data, cache, dalvik)
- Install the ROM
- Install GAPPS package
- Reboot - the first boot can take up to 5 minutes
- Copy the downloaded update to your phone.
- Boot into your recovery
- Back up your ROM
- Install the update
- Optionally wipe caches
- Reboot
Other Links:



XDA:DevDB Information
Official XenonHD 9.0 ROM by TeamHorizon, ROM for the Xiaomi Mi 9 SE
Contributors
krasCGQ, dadi11
Source Code: https://github.com/TeamHorizon
ROM OS Version: 9.x Pie
ROM Kernel: Linux 4.x
ROM Firmware Required: MIUI China developer 9.7.4 or July Global stable vendor
Based On: LineageOS
Version Information
Status: Stable
Stable Release Date: 2019-11-14
Beta Release Date: 2019-08-18
Created 2019-08-15
Last Updated 2019-11-16