I have a at&t unlocked phone(Sony 580i)
yesterday I tried to update the software from SONY update service, But it faied to do, and now my phone is not even starting, plsss help
I tried to repair it with Se Tool2 but it is giving following message

welcome to setool2 lite edition v 1.07
supported DB2010/DB2012 CID49/50/51, DB2020 CID49/51/52
Loaded 51 flash descriptors
ChipID:9900,EMP protocol:0301
error while reading security units
SECURITY UNITS CAN'T BE READ !
DAMAGED FIRMWARE/GDFS OR EMPTY PHONE
phone pre-boot failed,possible RECOVERY needed.
Elapsed:7 secs.