W660i Firmware for Australia

[Skimadikal]

hi

sorry if this is posted in the wrong place.

I am looking for firmware upgrade for the W660i and I was wondering which one i should go for. There Isnt one listed for Australia, so would I use the generic version? W660_R8BB001_MAIN_GENERIC_FY_RED53

Im new to all this, so Im sorry if I sound stupid :p I really just dont know how much of a difference it would make to use that one, or even a european one. I noticed that Australia isnt listed on the CDA list here either (my CDA is 102804/51)
Does it make a big difference if i dont use a country specific upgrade?

I am on the Three network in Australia if that helps (current version R6BC002)

Thanks in advance

EDIT: I just noticed W660_R8BB001_FS_ANZ_RED53, Im guessing thats Australia/New Zealand?