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Helpful answers
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Nov 1, 2014 7:16 AM in response to Boomdockerby Briansyddall,Hi The best fix is a Factory Resore my Wife's iPad 4 now running ok since iOS 8.1 upgrade Restore gets rid of the bugs Just use same Apple ID and you will get all your Apps & Data back I allways Restore over Wifi not with a pc. Cheers Brian
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Nov 1, 2014 7:42 AM in response to Boomdockerby Star Traveler,I have the 4th generation iPad, and I've had good results with the standard upgrade process, from doing it on the iPad, itself. But, that way is not the absolute best way to have an upgrade done. For a clean installation process, it's better to reset your iPad to its original factory condition and download a fresh and clean system. You do that with your iTunes program.
Be sure to turn off your anti-virus programs during this process, as they can interfere with this operation. Also make sure you do your backups and understand what information will be backed up and what will not, in reading the following Apple Support documents. The last document below is the one for resetting your iPad to its factory default condition.
Choosing an iOS Backup Method (Should I Use iTunes or iCloud to back up ...)
https://support.apple.com/kb/HT5262
Back up and Restore your iOS Device with iCloud or iTunes
http://support.apple.com/kb/ht1766
iTunes: About iOS Backups
http://support.apple.com/kb/ht4946
Create and Delete iPhone, iPad and iPod Touch Backups in iTunes
http://support.apple.com/kb/ht4946
iOS: Troubleshooting Encrypted Backups
http://support.apple.com/kb/TS5162
Use iTunes to Restore your iOS Device to Factory Settings