Help K790 CID53

hi guys m new to top sony forums...

m having k790i
i tried to patch my phone with XS++ but it gave a message "sorry your phone is not supported"

plz help guys...

message shown my XS++

16:05:37| Profiling SEMC phone...
16:05:37| Platform: DB2020
16:05:37| OTP CID: 51
16:05:37| EROM CID: 53
16:05:37| EROM Color: Red
16:05:37| IMEI: 35220701xxxxxx
16:05:37| Phone ID: K790
16:05:37| Region: S_ASIA_LEVAN
16:05:37| CDA: CDA102568/110 R8A
16:05:37| Firmware Version: R8BF003
16:05:37| EROM: R3A022
16:05:37| Ready for operation!
16:05:41| After making any changes with FSX
16:05:41| you must press the 'Shutdown' button
16:05:42| Sorry, your phone is NOT SUPPORTED
16:05:42| Error: FSX failed.
16:05:42| FSX Shutdown!
16:05:44| Disconnected... Unplug the phone

is there any problem with my firm ware.
which firmware should i go for...
need to enhance the phone's performance and volume also....

thanks in advance