updating samsung galaxy s2 to ics,problems

[dr_ranjha]

hi guys,
m not use to fourms,,so ignore my mistakes,
my problem is i was trying to update my galaxy s2 with kies but it says,
ur device can not b upgraded ...
considered updating by odin but i dont know which firmware version i should load..i m using a samsung galaxy which was of orange network,but m now in pakistan so network provider changed..
info
pda: 19100bvke2
phone :same as abv
csc: 19100ftmke2
so now plz tell me which file should i download..