I am attempting to get around my K610i's extended simlock.

I have the simlock patch generator and XS++ however when looking on topsony for the correct main and fs, all I have come across for my phone is:
K610_R1GB001_FS_T_MOB_INT_A_RED52.fbn

This is in the firmware directory and I thought fbn files were for fs? Have I got the wrong directory to get a mbn?

Any help would be greatly appreciated.

My phone details are as follows:

17:37:54| Baseband ID: 9900
17:37:54| Protocol Version: 3.1
17:37:54| Phone name detected!
17:37:54|
17:37:54| Profiling SEMC phone...
17:37:54| Platform: DB2020
17:37:54| OTP CID: 51
17:37:54| EROM CID: 52
17:37:54| EROM Color: Red
17:37:54| IMEI: 35463701xxxxxx
17:37:54| Phone ID: K610
17:37:54| Region: T_MOB_INT_A
17:37:54| CDA: CDA102497/8 R12A
17:37:54| Firmware Version: R1GB001
17:37:54| EROM: R3A016