Sgs2 ? Every android phone have different custom to they phone like size of screen ,pad menu etc. To get new os like ics check new os upgrade in official site that phone.

samsung galaxy s 2 have 2 version which is GT-I9100G and GT-I9100.. the GT-I9100 is easily upgraded via hp .. while the G version always shows 'no update available' ..

Try visit kaskus , in there much room topic club android user . Its call "lounge samsung ...type.." may it not help but u can get some info in there.