this problem could be resolve if you flash with the firmware R8BE001
but if the problem persist could be a problem of hardware
W580_R8BE001_FS_AMERICA_2_RED52
W580_R8BE001_MAIN_GENERIC_LA_RED52
HB1-06_Gen_CDA102568_107_R8A_GENERIC_AMERICA_2
How to get access to Download Area? - Top Sony Forums
Regards