now my iphone4 version is 6.0.1, personal hotspot does not works well as before, so i want to upgrade back to the old version 4.3.5,please help me
now my iphone4 version is 6.0.1, personal hotspot does not works well as before, so i want to upgrade back to the old version 4.3.5,please help me.
iPhone 4, iOS 6.0.1
