I'm currently in Tanzania for 7 weeks volonteering. But I still want to upgrade my iphone 3gs to 4.0.
It isn't jailbroken nor unlocked.
My question is: Can I use my friends macbook pro to upgrade MY iphone to 4.0 and still keep all my music, apps etc? As you may understand, my iphone is synced to my computer at home..
Thank you for any information.