W810i quick question ref fs file before i flash phone.

I have a w810i with the following spec
CID 49
RED
CDA102494/1 R2A
R4CK003
EUROPE_1
English language.

My quesion is when i go to the download page and look at the fs files for this phone there are a few different types.
It shows EUROPE 1,2,3,4,5
Do i select EUROPE 1 or can i select any of the others 2,3,4,5 ?
I am not sure what the difference is .
Please can you advise
Thanks very much

the differences are the language pack, go to Language Description and you'll find what you need