Oook i do that yesterday, and i found a bug, if i connect my phone to my pc, the pc found only the sd, (External_SD) and if i go to /Storage in Root browser he found me only sdcard0. (Normally is the Hard disk of the phone, but it's only my sd, because it's only 2 gb. i don't know if the system is installed in external_SD, but when i install an app, it normally it go in the sd. And if i go in impostation memory He found the sd and the hard disk, but in the hard disk i have only system.
Sorry for english, but this is the most important bugs that I found, I hope that you will find a solution soon.