you can install with 3.0 no problem. I already tried it with 3.0. Root I dont know.
---------- Post added at 09:43 PM ---------- Previous post was at 09:31 PM ----------
@ABM30 here I found the linage 14.1 for Leeco x2 maybe this helps with fingerprint?
https://github.com/LineageOS/android_device_leeco_x2
I found this lines:
# Fingerprint sensor
bin/qfp-daemon
etc/stargate/image_quality/templates/template1.pgm
etc/stargate/qfp_config.txt
etc/stargate/wakeup/templates/template_imaginary.bin
etc/stargate/wakeup/templates/template_real.bin
lib64/hw/fingerprint.msm8996.so
vendor/lib64/libqfp-service.so
vendor/lib64/qfp.wakeup.so
maybe we can use the libqfp-service.so / qfp.wakeup.so libs?