Hey, thanks for posting. Just to contribute…
Tested this on my MTK6577 STAR B92 android 4.1.2 but sadly it didn’t work.
Tried it a few times (using normal mode). First time it hung, second time it brought up the restore screen on the phone but the phone didn’t restart. Third time, the restore screen came up and the phone restarted but no root access when it booted back up.
The script looked like it ran without problems with only one error in the process “mount: permission denied (are you root?)”
Will keep an eye out for developments
Cheers