can't mount emmc
can't mount sdcard
unknown volume for path
掛載 phone storage
需要砍掉系統
請先準備好要刷的ROM
放進記憶卡
進 recovery
mounts and storage menu
format /system
wipe data / factory reset
wipe cache partition
advanced -> wipe dalvik cache
choice zip from sdcard -> select the zip from sdcard
