Apple no longer signing iOS 9.3.1, Downgrade no longer possible

In a quick move from Apple, the company has officially stopped signing iOS 9.3.1 which means iPhone, iPod Touch and iPad users can no longer downgrade back to iOS 9.3.1 via iTunes and will now be forced to install iOS 9.3.2 upon any attempts to restore their devices.

Unlike a number of recent iOS signing closures in the past, Apple seems to have pulled the plug on iOS 9.3.1 for all of its devices at once this time rather than for only some devices now and more later.

Apple stops signing iOS 9.3.1
The iOS 9.3.1 firmware was launched at the end of March and was followed by iOS 9.3.2 in the middle of May. iOS 9.3.1 has been available to iOS device users to restore or downgrade to for about three weeks following the initial iOS 9.3.2 firmware release, which fixed minor bugs throughout iOS.

A second iOS 9.3.2 release was also put out to the public on June 2nd after the original software update was pulled for the 9.7-inch iPad Pro by Apple due to problems, and these issues may have been the only reason for some users to have any desire to downgrade back to iOS 9.3.1.

To easily check and see if a firmware version is being signed for your device, you can use a handy online tool called IPSW.me, which allows you to select your device from a list and see the firmware versions that Apple currently supports for your device. If the firmware appears green, it’s being signed; if it appears red, it’s not being signed.