K550i@w610i CID53 Flash help !!! Please

Hello people, u have k550i@w610i cid52 phone and its flashed with elfs and that kinda stuff
But my friend wants to flash his k550i but the phone is cid53
I have Far manager with jd flasher cid53 update
I will flash the files like that Flash K800 CID53 with K810 software CID53 (for begginers) (if someone give me better theme for the work, from topsony). U have the files -
W610_R6BC002_FS_MEDITERR_RED53.rar
W610_R6BC002_MAIN_GENERIC_NA_RED53.rar
HB1-06_Gen_CDA102568_4_R6A_GENERIC_MEDITERR.zip
After this u think that things will be cool.But the phone will be locked - When i turn it on it says insert correct sim sard. Can somebody here help me? So how to unlock the phone ?
Can someone give me link how to flash with FAR - CID53 And how to patch the phone to unlock it

Try this : Patching CID53 (DB2020) and any CID (DB2010,DB2012)
but you will need the original provider sim which was locked to or else you have to use Omnius which is a paid service and offers great functions.
Omnius : Top Sony Forums - Buy Omnius License

Ooh u will ask my friend about the original sim, but is this gonna work - he buy the phone from bulgaria - from Globul magazines and now he is with Globul sim card? - is this gonna work. For omnius i dont want to spend money...