I have a brand new factory unlocked iPhone 5 which was recently purchased. I am unable to upgrade iOS 6.1.2 on this new phone. The current iOS on this phone is 6.0.2. I have placed a local carrier SIM and it is working. Currently phone is in working condition with iOS 6.0.2 and I am trying to upgrade to iOS 6.1.2 which is the latest one. Kindly share your thoughts or experiences in upgrading to iOS 6.1.2 success.
I have upgraded to iOS 6.1.2 using WiFi and this has solved my problem. Its working fine now. Thanks for all of your suggestions and remarks in making my problem resolved. Thanks once again to all.