Question [Q] Galaxy s2 update

Hi guys i'm new to xda but i still have this gut wrenching question,

you i have a galaxy s2 and it still runs on android 2.3.4 gingerbread and i have this update via phone update or OTA(over the air) update which is in Setting> about phone> system updates ETC. and its about 234+mb of data, i'm from Philippines by the way and i don't know if this ics update is 4.0.3 or 4.0.4 because i have been reading alot of forums and even if they 1 year older or 2 year old(doesn't matter) there alot of comments about bug and the update SUCKS sometimes the battery would be drained in a short amount of time or the camera would not be working or the simcard does not detect.

Please Help and i know i should update VIA ODIN in PC but d don't know what my S2 is it international or Southeast asia etc. and i have seen in viotutorials.com and the youtube channel they have alot of vid regarding the update of the galaxy s2 and i'm just confused why so many vids and each had different files and some minor process or steps...

any answer would much be appreciated