** Standard Disclaimer: Unlocking your Bootloader will Void your Warranty. I take no responsibility for this or for any bricked devices. These thing should go without saying at this point, but there they are. If you are here, I assume you are familiar with LineageOS, TWRP, and moving from MIUI to AOSP-based ROMs**
I've built a clean version of LineageOS 17.1 for Mi 9 that includes Signature Spoofing, but no other modifications.
This will allow those who are interested to get full MicroG support without the need of using any sort of Patcher or Magisk/XPosed Module. YOu all may have used my previous LineageOS Clean,Stock ROM and this is just an updated build of that ROM + Signature Spoofing to make life easier for those who want MicroG.
I flashed this and followed the simple steps of installing F-Droid, adding the MicroG Repo, and Installing the necessary packages via F-Droid and confirmed MicroG Self-check passes all the tests (once you finish granting the necessary permissions for each).
I prefer this over the NanoDroid or other patching methods as a much cleaner way to use MicroG with LineageOS.
Proprietary Blobs/Device Tree are DRG-Developer's as referenced in their post: here
Kernel source is by DRG-Developer: here
Xiaomi Hardware package used is the primary LineageOS from their github here
My reason for this is that there does not seem to be an officially-supported build for our device on the LineageOS for MicroG project or a recent, unofficial build.
What Works:
Pretty much everything from what I can tell
Fingerprint Sensor it working like a champ so far.
DT2W/DT2S
NFC Seems to be working but I don't have a device to test against
Known Issues:
You tell me...
Download:
mega.nz
Prerequisite:
Make sure you are running a current AOSP/MIUI ROM with the latest firmware flashed and TWRP Installed
Install:
From TWRP:
1) Wipe Date (standard wipe)
2) Format Date ---> 'yes'
3) push ROM zip to /sdcard/
4) Flash ROM zip
4b) - OPTIONAL - Flash Magisk Zip for Root
5) Reboot to system
If you want to to install MicroG, just follow the steps outlined here in the "Install" section to get F-Droid installed, add the MicroG Repo, and install the handful of apps needed. No need for any of the patching steps.
DRG-Developer's device trees were last updated on 2020-10-18 so expect this build to reflect that. So far everything seems to function very well.
I've built a clean version of LineageOS 17.1 for Mi 9 that includes Signature Spoofing, but no other modifications.
This will allow those who are interested to get full MicroG support without the need of using any sort of Patcher or Magisk/XPosed Module. YOu all may have used my previous LineageOS Clean,Stock ROM and this is just an updated build of that ROM + Signature Spoofing to make life easier for those who want MicroG.
I flashed this and followed the simple steps of installing F-Droid, adding the MicroG Repo, and Installing the necessary packages via F-Droid and confirmed MicroG Self-check passes all the tests (once you finish granting the necessary permissions for each).
I prefer this over the NanoDroid or other patching methods as a much cleaner way to use MicroG with LineageOS.
Proprietary Blobs/Device Tree are DRG-Developer's as referenced in their post: here
Kernel source is by DRG-Developer: here
Xiaomi Hardware package used is the primary LineageOS from their github here
My reason for this is that there does not seem to be an officially-supported build for our device on the LineageOS for MicroG project or a recent, unofficial build.
What Works:
Pretty much everything from what I can tell
Fingerprint Sensor it working like a champ so far.
DT2W/DT2S
NFC Seems to be working but I don't have a device to test against
Known Issues:
You tell me...
Download:

849.98 MB file on MEGA
Prerequisite:
Make sure you are running a current AOSP/MIUI ROM with the latest firmware flashed and TWRP Installed
Install:
From TWRP:
1) Wipe Date (standard wipe)
2) Format Date ---> 'yes'
3) push ROM zip to /sdcard/
4) Flash ROM zip
4b) - OPTIONAL - Flash Magisk Zip for Root
5) Reboot to system
If you want to to install MicroG, just follow the steps outlined here in the "Install" section to get F-Droid installed, add the MicroG Repo, and install the handful of apps needed. No need for any of the patching steps.
DRG-Developer's device trees were last updated on 2020-10-18 so expect this build to reflect that. So far everything seems to function very well.