Debrand K850i "3" phone to use on T-mobile USA

I got a k850i '3' brand phone from england and had it unlocked using aerix, but I want to take all the 3 brand names off and use it on tmobile here in the united states, which files do I need to do this?

11:28:03| Baseband ID: C802
11:28:03| Protocol Version: 4.1
11:28:03| Warning: IMEI name does not match GDFS name (IMEI:NULL GDFS:K850)
11:28:03| ...using GDFS name
11:28:03|
11:28:03| Profiling SEMC phone...
11:28:03| Platform: DB3150
11:28:03| OTP CID: 52
11:28:03| EROM CID: 52
11:28:03| EROM Color: Red
11:28:03| IMEI: 35182902xxxxxx
11:28:03| Phone ID: K850
11:28:03| Region: HUTCH-WORLD
11:28:03| CDA: 1202-9023 R17A
11:28:03| Firmware Version: R1FA037
11:28:03| EROM: 1200-4341 SEMCBOOT R6A013
11:28:03| Ready for operation!