I bought my friend's old iPhone 3gs about a year ago and had to get it unlocked as I wanted to keep my number on the Tesco network. This also meant I had to get it jailbroken, which meant I couldn't update the iOS. This was fine at the time but now I can't get a lot of new apps as my iOS is out of date.
My iOS is version 4.1 but I'd like to update it to at least 5.Is this possible and how?
Thanks in advance.
>>> How to update the iOS on my jailbroken iPhone 3gs?