I lived in SINGAPORE and I am about to flash my K610I to W660 using the following:
- W660_R8BB001_MAIN_GENERIC_FY_RED53.rar
- W660_R8BB001_FS_EUROPE_5_RED53.rar
- HB1-06_Gen_CDA102568_14_R6A_GENERIC_EUROPE_5
I was told the country for FS and Custpac must be the SAME; I can't find any for SINGAPORE so I am using EUROPE.

Going by your comment, does it mean I may encounter problem with the network since SINGAPORE is not EUROPE. Kindly enlighten before I proceed with the flashing. Thanks.