FLASHING GUIDE ONEUI 8.5 - X6881

Method #1.

VIA CUSTOM RECOVERY:

step #1:

-REBOOT TO YOU'RE CUSTOM RECOVERY (OFOX/PBRP/TWRP)

-click oneui8.5super.img

-scroll down & find super partition then select/click it

step #4:

-swipe to flash

step #5

-format data & reboot system

Method #2.

VIA FASTBOOT (NEED PC/LAPTOP)

step #1:

-Reboot to fastboot

step #2:

-fastboot flash super <drag oneui8.5super.img here>

step #3:

-fastboot reboot recovery

step #4:

-format data & reboot system

ENJOY!