Tested images

Mostly working fine (see Hardware support bellow)

• AndyYan's unnoficial LineageOS 21 (TD-based): lineage-21.0-20240217-UNOFFICIAL-arm64_bvN.img.xz
• AndyYan's unnoficial LineageOS 20 ("Light"): lineage-20.0-20231116-UNOFFICIAL-arm64_bvN.img
• TrebleDroid's AOSP android_14.0.0_r17: system-td-arm64-ab-vndklite-vanilla.img

Steps to install

Download the SDK Platform Tools.

unxz your_gsi_rom_of_choice.img.xz

# Flasb vbmeta
wget https://dl.google.com/developers/android/qt/images/gsi/vbmeta.img
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img

# Enter fastbootd
fastboot reboot fastboot  # If this does not work: boot system and `adb reboot fastboot`

# Flash system and wipe userdata
fastboot flash system your_gsi_rom_of_choice.img
fastboot -w  # Wipe userdata
fastboot reboot

Steps to update (if OTA is not working)

unxz your_gsi_rom_of_choice.img.xz

fastboot reboot fastboot
fastboot flash system your_gsi_rom_of_choice.img

Hardware Support post flashing

Component	Comment
Camera	Works
Speaker/Mic	Works (headphone jack requires tweak)
Bluetooth	Works
Wi-Fi	Works
SIM/Mobile Data/Voice	Works
VoLTE	Not tested
Fingerprint	Works
NFC	Works
Offline Charging	Not tested
Display Refresh rate	60Hz (90Hz in phh settings)
Screen Brightness	Works (but auto-brightness is weird sometimes)
Volume scale	Works
5G	N/A
SafetyNet post root	Passed (with safetynet-fix in magisk)
WideVine certification post flash and root	L1

Notes

• For headphone jack enable Qualcomm > Use alternate audio policy