i have an iphone 3g in my hand
that my friend got from ebay
i was trying to unlock it for my friend,
however i discover that
the system is kinda sorta messed up
there are some apps installed on there used to change imei
after i jailbreakeed it
so the real history of the iphone is unknown
is there any way i can just erase everything and restore it back
to its original state?
or if any one can point me to some other posts so i can research it?