This device isn't eligible for the requested build (iOS 7)?

I'm a registered apple developer and i'm currently trying to update my iPad 3rd generation (Wi-Fi + cellular) to iOS 7 to continue my app development. I have already successfully updated my iPhone 5 (A1429) and iPhone 4 (A1332) but i'm stuck with updating my iPad 3 (A1430) to iOS 7. I keep getting the error "This device isn't eligible for the requested build."

Now before you start flaming me for not being smart enough to be an apple developer, i have followed all the steps available. I have even tried to download other versions of the iPad ipsw's but i get the same error for all of them. I have checked my hosts file and there's no other entries than the standard ones (localhost). No gs.apple.com or anything like it. I have updated my iMac software as well as my iTunes software to the latest versions and restarted my computer numerous times but it just doesn't work. I have also tested it on my friends computer (completely different network etc) and still no success, this is driving me crazy. My iPad is currently on iOS 6.1.3.

Any help would be appreciated.

Lol ask apple not us mr.apple developer