Today I re visited my oneplus 3t was playing around with it and found a android 11r rom for it and installed it it works great. But no luck with11r gapps they flash ok but the set up system will not work. So Google sign in doesn’t work for gapps but I have good hopes for it just have to wait awhile I guess if u guys want to try it I’ll post some directions on how ok
Step1.first u must have a unlocked bootloader with twrp installed.
Step2. Then u will have to download all the files needed to get the job done.
Step3.next u will have to wipe cashes dalvic cashes system and data in twrp.
Step4.go to install and flash your firmware file that I will provide
Step5. This is the firmware + modem file u will need for op3t so everything flashes ok
Next flash the rom firmware file
Lastly reboot and enjoy remember this is for experimental purpose only just to play with untill we get gapps that work (not for a daily driver as of now)
Update gapps bit gapps gives play store