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Sep 24, 2014

How to revert from iOS 8.0.1 update to earlier version?

This update caused more problems than it resolved, including that rather important feature called cellular connectivity. How does one revert to the earlier, more functional version of iOS 8?

10/02/2014
iOS 8.0.2 has been released:

http://support.apple.com/kb/DL1758

"This release contains improvements and bug fixes, including:

Fixes an issue in iOS 8.0.1 that impacted cellular network connectivity and Touch ID on iPhone 6 and iPhone 6 Plus
Fixes a bug so HealthKit apps can now be made available on the App Store
Addresses an issue where 3rd party keyboards could become deselected when a user enters their passcode
Fixes an issue that prevented some apps from accessing photos from the Photo Library
Improves the reliability of the Reachability feature on iPhone 6 and iPhone 6 Plus
Fixes an issue that could cause unexpected cellular data usage when receiving SMS/MMS messages
Better support of Ask To Buy for Family Sharing for In-App Purchases
Fixes an issue where ringtones were sometimes not restored from iCloud backups
Fixes a bug that prevented uploading photos and videos from Safari"
09/26/2014

Apple has recognized that 8.0.1 has some issues, and they have just put up a page that guides you through the steps to reinstall 8.0:

 

1. Make sure that you're using the latest version of iTunes.

2. Connect your iPhone to iTunes.

3. Back up your iPhone in iTunes on your Mac or PC. iCloud backups won't restore to earlier versions, including iOS 8.0.

4. Download the file below that corresponds to your device:

iPhone 6

iPhone 6 Plus

5. Select the file you just downloaded by doing one of these in iTunes: Mac: Press the Option key and click Check for Update. Windows: Press the Shift key and click Check for Update.

6. Press Update to install iOS 8 on your iPhone.

 

The Health app won't work in iOS 8 after these steps. It will be fixed in our upcoming iOS 8.0.2 software update. http://support.apple.com/kb/HT6487

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