In the last days have received several post asking if is possible return of iOS 10 to iOS 9 and unfortunately must say that not, not is possible make the downgrade in this time, or it will be in a future.
As we reported a few days ago, Apple stopped signing iOS 9.3.5, the latest version of iOS 9 that the company continued accepting installation on devices that do not have it already installed. This wants to say that already not considered secure it version of the system operating, by which not is possible install it in any device.
It is no longer possible to install any version of iOS 9
At the time of writing it is only possible to install iOS 10.0.2 and iOS 10.0.3 (the latter is unique to iPhone 7 and iPhone 7 Plus), as these are the versions that the Cupertino company is signing at this time.
Security is the main reason that Apple stop signing the old versions of your operating system. An older version may have security flaws that any attacker can exploit to introduce some kind of malware or similar. As a result, Apple stop signing the old versions when new versions have been some weeks available to all users, and have not appeared large failures that prevent its normal use.
10 iOS has been very well received by users in general and few weeks after its release adoption figures indicate that it has already reached 70% of active devices.
