iOS 9.0.2Activation Error can be fixed easily by following simple steps. Actually, it occurs, if you mistakenly hit restore button rather than update…
iTunes Activation Error
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.
If you have developer account, you can update iOS 9.0.2beta to test your apps or games before iOS 9.0.2public release. But, if you have made a mistake and hit “Restore” button instead of “Update” while installing iOS 9.0.2beta using iTunes, you might have got iTunes activation error.
Well if you have done that mistake, you have an option to install iOS 9.0.2without activation error. Look, there isn’t any way to bypass activation error, however, we can avoid that mistake and bypass iTunes activation error. I hope, you have understood what exactly activation error is.
Look, in the summary, you would have to restore iOS 126.96.36.199 back from iOS 9.0.2first and then install iOS 9.0.2once again from scratch without making that mistake again.
First downgrade iOS 8 beta to iOS 188.8.131.52 and then again open iTunes and update your iPhone, iPad Air, iPad Mini or iPod Touch to iOS 9.0.2by pressing an update button.
Make sure this time, you will not make that mistake again otherwise you would get iTunes activation error again…