ᴇʀғᴀɴ ᴀʙᴅɪ:
P DP3 semi-GSI - EXPERIMENTAL AND MOST LIKELY BROKEN
https://www.androidfilehost.com/?w=files&flid=275999

Requirements :
1) Qcom fully treblized device with 8.1 vendor

How to flash :
1) extract and flash P-DP3-sGSI.img.zip to system
2) mount vendor in TWRP
3) flash POST-sGSI zips from 1 to 3 in priority
4) reboot

if didn't worked post your logs(logcat and console-ramoops) here i'll come for help : @PsemiGSI

Enable adb using this command in TWRP :
Linux/mac : cd ~/.android && adb push adbkey.pub /data/misc/adb/adb_keys
Win : cd C:\Users\<userName>\.android\
adb push adbkey.pub /data/misc/adb/adb_keys
And take logs