cm12想刷回官方4.3問題

如果是 updateing@XDA 的 [UB][TX][L] CyanogenMod 12.1 Homebuild，文章中有提到，在刷成其他 ROM 之前，就要先修改內部 SD 的權限。

NOTE: sdcard owner has been changed to 1023:1023 since 20150319.
If you want to switch to other ROMs, remember to do this before you flash in order to get a writable internal storage.

Code:
su
busybox chown -R 2800:2800 /mnt/media_rw/sdcard0