i've just purchased a 2g iphone off my mate. Apparently he factory defaulted it before selling it to me. Its unlocked (i can use any phone network in the UK on it - it works) and has this installer app on it. the firmware is 1.1.4. I've not connected it to itunes, registered etc. I don't know where to begin really. I've read some information on this site but I need someone to push me in the right direction. Some people have told me to firstly upgrade the firmware and register with itunes. I don't know if thats true?
What I need to know is:
Do I need to do anything to it in terms of upgrading the firmware, jailbraking, confirguration?
I'm using my own sim card in the phone and it works fine, but I wanted to download some apps such as tubedeluxe etc. how do I do it?
If I connect it to itunes, what will/can/should happen?
Can someone point me in the right direction please? Any help would be much appreciated!