Ok that file i believe is the file that will debrand your phone from a network operator . europe 5 just means the available languages you can have ie italy france UK germany etc. Generic is just defining that your phone is free from one network operator.

the other files are just your latest main firmware and file system.

if you want other languages ( search this forum for lists of languages) then choose europe 2 or central europe or asia etc etc.... (make sure the fbn and custom files match languages.

I used the above files to debrand and unlock my w850i and it worked like a charm. I can use any sim card and i dont have any network software or icons , Free as a bird lol. any more help just ask and if i cant help mabee someone else here can as i am a noob.