hello, I have this problem with my Xperia pro, I've used 4.1.B.0.587 firmware version, but now I want to downgrade to GB, I have the back up from 4.0.2.A.062, but using FlashTool, this reinstalls the ICS, so I tried with an old one like 4.0.2.A.58 that works but when I try to update via OTA to 0.62, it says that "Can not install the software", Any idea?
