If you don't have access to fastboot, use the instructions in the partitioning guide to flash the engineering ABL.
- With the device turned off, hold the volume down button, then plug the cable in.
Replace
path\to\modded-twrp-g8x.img
with the actual path of the provided TWRP imageAfter booting into TWRP, leave the device on the main screen. You can press the power button to turn the display off, if you want
fastboot boot path\to\modded-twrp-g8x.img
adb shell mkfs.ntfs -f /dev/block/by-name/win -L WINMH2LM
adb shell mkfs.fat -F32 -s1 /dev/block/by-name/esp -n ESPMH2LM