My HTC One M9 is the US Dev edition. For some reason I can't seem to flash any recent roms like Insert Coin's r37 beta, or AndroidRevolution HD 5.0. I know that I'm supposed to mount the system before flashing but that doesn't work, nor does wiping system before flashing. Does anyone know where I could go to figure this out? I'm S-Off'd with TWRP 2.8.6.4.
EDIT: I've been using this script: mount -t ext4 /dev/block/bootdevice/by-name/system /system
EDIT: I've been using this script: mount -t ext4 /dev/block/bootdevice/by-name/system /system
xda-developers