Following the release of iOS 10. 2 last month, Apple stopped signing iOS 10. This means that now it is not possible to return to this version of the operating system - the company no longer issues certificates for iOS 10.
Apple signs older versions of iOS within a few days after the release of the new firmware. This time the window is closed after a month and a half - iOS 10. 1 stopped signing on Wednesday, June 28. At this time, iTunes does not issue certificates for this firmware for any compatible iPhone or iPad.
In other words, do downgrade on iOS 10. 1 is no longer possible, and any attempt to make a rollback or update to this firmware from previous versions of the "operating system" will encounter an error.
The current version of the operating system Apple - iOS 10.
For this version there are no tools for jailbreaking. Therefore, iPhone and iPad owners should be more careful. Do not install unchecked jailbreak tweaks, which can lead to failure, as a result of the restoration will have to update iOS devices and lose jailbreak.
Currently, Apple is testing iOS 10. About when it is worth waiting for the release of the final version of this update, is not reported. Presumably, this will be the latest build for the tenth mobile platform edition.