These are instructions on how to downgrade from the iOS 7 Beta to iOS 6. You will only be able to downgrade to the latest iOS 6 release (Currently that is 6.1.4 for iPhone 5, 6.1.3 for iPhone 4S). You cannot use your saved SHSH blobs on any A5+ device -- they are (currently) useless.

Before attempting any downgrade, please be sure to backup all of your information.

Step One
Download the latest iOS 6 firmware for your device

Step Two
Launch iTunes from your dock

Step Three
Place your device into DFU Mode by following these steps:

1. Press and hold the Home button and the power button at the same time
2. After exactly 10 seconds release the power button. Continue holding the home button until you iTunes pops up a message telling you that it has detected an iPhone in recovery mode.

Step Four
Once you receive a message telling you that your iPhone is in recovery mode, press OK

Hold down the shift key (in windows) and click the Restore iPhone... button.

Step Five
Select the firmware file you downloaded earlier from the window that appears

When asked to confirm the restore click the Restore button.

Step Six
iTunes will go through the process of the restore/downgrade and after about 10-15 minutes, your device will be freshly restored to iOS 6.

Hit thanks if i helped you.