adb devices
adb reboot fastboot # fastbootd
adb reboot bootloader # fastboot
fastboot flash boot lineage-19.1-20220618-UNOFFICIAL-cupid-boot.img
fastboot flash vendor_boot lineage-19.1-20220618-UNOFFICIAL-cupid-vendor_boot.img
fastboot flash dtbo lineage-19.1-20220618-UNOFFICIAL-cupid-dtbo.img
fastboot flash recovery lineage-19.1-20220618-UNOFFICIAL-cupid-recovery.img
fastboot reboot recovery # or bootloader
adb sideload lineage-19.1-20220810-UNOFFICIAL-GMS-cupid.zip
grep -e fingerprint -e security_patch /system/build.prop
2022-07-01
Xiaomi/cupid_eea/cupid:12/SKQ1.211006.001/V13.0.19.0.SLCEUXM:user/release-keys
adb shell
su
props
1 # Set the fingerprint to the one you obtained
5 # Add a custom prop with the name ro.build.version.security_patch, it should already exist, but it is most likely wrong
Translation: Everything is fine except for the face recognition.