"There is no carrier that supports the installed SIM Card in the Iphone"
I buy a used 4Gb iPhone, there was installed AT&T sim card and the phone has been in use. There is 1.1.1 firmware inside.
I unlock the phone with anysim and it works great. But when i connect the phone on itunes i get error: There is no carrier that supports the installed SIM Card in the Iphone
iTunes version is 7.5 and i try also pc/mac version 7.4.1 and 7.4.2
If i try to connect iTunes with AT&T sim it says that the sim card number is not valid..
Any idea what i can do now? Or is this phone dead.. i can call but i can't copy a music on it.