w880 firmware

[metalshegy]

Hi i want to flash my w880. Wich firmware and main should i put for croatian langauge and t-mobile and do i have to put the custom pack or is that a free choice?
easy guide for flashing by xs++ - Page 2 - Top Sony Forums
I saw this guy putting the customs but is that important for flashing? Pls give me the links for firmwares, and for the custom only if needed

Thx

16:53:04| Hold 'C' button on phone and connect phone NOW.
16:53:04| You have 30 seconds...
16:53:04|
16:53:11| Baseband ID: 9900
16:53:11| Protocol Version: 3.1
16:53:11| Warning: IMEI name does not match GDFS name (IMEI:NULL GDFS:W880)
16:53:11| ...using GDFS name (whats this??????)
16:53:11|
16:53:11| Profiling SEMC phone...
16:53:11| Platform: DB2020
16:53:11| OTP CID: 51
16:53:11| EROM CID: 52
16:53:11| EROM Color: Red
16:53:11| IMEI: 35159602xxxxxx
16:53:11| Phone ID: W880
16:53:11| Region: T_MOB_INT_B
16:53:11| CDA: CDA102719/21 R10A
16:53:11| Firmware Version: R8BA024
16:53:11| EROM: R3A022
16:53:11| Ready for operation!