Firmware version differences

[Freesty]

So, if I want to add Dutch language to my W580i (which is already unlocked) which files should I download to flash it?
Or is it more easy to add it without flashing?
I've read about it on the forum, but it seems more easy to me to flash the phone.

[SeaMonkey]

So, if I want to add Dutch language to my W580i (which is already unlocked) which files should I download to flash it?
Or is it more easy to add it without flashing?
I've read about it on the forum, but it seems more easy to me to flash the phone.

Look here for language Top Sony - Languages Description

[Freesty]

So I need Europe 3 for Dutch language.
On the firmware page for the W580i I found 12 folders to choose from first.
Which should I choose?
If I look through all those folders I can find the FS for Europe 3, but not the Main.

[SeaMonkey]

What CID your phone have?