by jessej » Wed Dec 23, 2015 7:59 am
Depends on from which version...
I had similar problems going from 1.0.0.7 -> 1.0.0.8. After alot of unecessary troubleshooting I found out that going to 1.0.0.8 required using an OTG usb cable upgrade due to kernel files/partitions/something. Not very well documented I might add. The symptoms you have are about the same, so give the cable upgrade a try, especially if you are going from a version prior to 1.0.0.8.
Also, do note that an OTG cable is not an ordinary USB cable, it has a different pin layout so such a cable might be a bit tricky to find (at least it was for me).
Anyway, hope this helps! =)