On my Recent Thread UPDATING TO IOS7 Beta 2
If you have failed to escape the Activation Error like this error message this device is not registered as part of the iphone developer program.if you are a member of the program, please register your device in the iphone developer program portal Here's what you can do
Here's the steps to resolve the issue
1. Enter DFU Mode
Turn off your device, connect the sync cable then press and hold the power and the home button together, count to 9 then release pressing the power button, bitawan mo lang yung home kapag nadetect na ng PC yung device mo
2. Restore and Update to IOS 6.1.3
3. Once restore has been completed, please be sure na setup your iPhone as NEW IPHONE this should be done inside the iTunes User Interface
4. KAILANGAN MAKAABOT KA SA HOME SCREEN bago tayo magupdate sa IOS7
5. Hold Shift and Press Check for Update sa itunes
6. Hayaan mo lang magupdate
7. That will fix this
TO DOWNGRADE FROM IOS7 to 6.1.3
iPhone: iPhone 5*, 4S, 4.
iPad: iPad 4, iPad 3, iPad 2 (Not yet)
iPod Touch: iPod Touch 5Gen.
Step 1: Turn the device off, connect it to the computer via USB, and launch iTunes
Step 2: Place the iOS device into DFU mode: with the device off, hold down the Power and Home buttons together for 10 seconds then release the power button, continue holding Home button until iTunes notifies you of a device in recovery mode being detected. The devices screen should stay black as if turned off.
Step 3: Restore within iTunes through either method a or b:
a) Restore from the iOS 6.1.3 backup you made prior to installing iOS 7 beta
b) Restore to iOS 6.1.3 IPSW by Option-Clicking the “Restore” button, and then restore from iCloud backup when finished
Step 4: Let iTunes restore back to iOS 6.1.3, the device will reboot when finished
Typically you can’t downgrade iOS versions so easily, but because Apple is still signing iOS 6.1.3 this allows downgrading to commence with minimal effort.