Flash your phone and How to apply or remove patch using SETool 2 Lite

[riders4sia]

I try backing up the gdfs but the following error appears:

Will backup GDFS now.
Abort all operations.
phone pre-boot failed,possible RECOVERY needed.
Elapsed:7 secs.
Will backup GDFS now.
ChipID:9900,EMP protocol:0301
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:53
Speed:921600
OTP LOCKED:1 CID:51 PAF:1 IMEI:35489401710026 CERT:RED
FLASH CID:53 COLOR:RED
Can't build loaders chain ;(
Elapsed:4 secs.
Abort all operations.
Can't load ID loader !
Elapsed:58 secs.

setool2lite does not support CID53 phone and cannot make backup. if you want to flash read here : Top Sony Forums but use files only for your phone