[Q] Update s3 from 4.1.1 to 4.4
My brother sent me an unlocked AT&T s3 from USA. I live in Australia and have been using the phone here since last year. Recently i found out that the phone is till running 4.1.1 software but when i checked for an update it says that there is no update available.
Can anyone please tell me that how can I upgrade the software here in Australia?