W610_R6BC002_FS_EUROPE_5_RED52
HB1-06_Gen_CDA102568_14_R5A_GENERIC_EUROPE_5
W610_R6BC002_MAIN_GENERIC_NA_RED52


EUROPE_5: English - French - German - Italian

If you will other language can see here: Top Sony - Languages Description

File System ( FS ) and CDA must be same, etc.:

W610_R6BC002_FS_EUROPE_2_RED52
HB1-06_Gen_CDA102568_11_R5A_GENERIC_EUROPE_2
W610_R6BC002_MAIN_GENERIC_NA_RED52

or
W610_R6BC002_FS_BALTIC_RED52
HB1-06_Gen_CDA102568_1_R5A_GENERIC_BALTIC
W610_R6BC002_MAIN_GENERIC_NA_RED52