If you've installed an iOS beta either through Apple's developer program or the public beta testing website, you may find yourself wanting to downgrade if you've run into issues. iOS beta software can be notoriously buggy, especially during the first few betas of a major update.
Apps often don't work, devices crash, battery life is poor, and entire features can be rendered non-functional. In some cases, these problems are a big enough deal that users will want to downgrade back to the more stable release version of iOS.
It's possible to restore your iPhone or iPad to the release version of iOS, but you're going to need an archived iTunes backup to restore your iPhone or iPad to its pre-beta state, so hopefully you have one on hand (this is the first step in any beta installation).
If not, downgrading will require wiping your device, so you'll need to start from scratch with apps, accounts, and preferences. Here are the steps to downgrade:
Click here to read more...
Article Link: How to Downgrade From an iOS Beta