Update: In a statement, Apple says the issues have been resolved and only affected a “small number of users.”
If you’re updating an iPhone or iPad over-the-air to iOS 10, definitely make sure to be cautious and backup your device. Some users are reporting that their devices are “bricked” after updating to the latest version of iOS.
Problems with the smaller iPad Pro, some iPhones
A number of users on the MacRumors forums are reporting the issue. It doesn’t seem to be confined to one iOS device as a number of 9.7-inch iPad Pros and iPhone users are having the issue.
When a device is being updated, there is some type of issue and the iPhone or iPad is put into recovery mode. The only way to restore the device is to use iTunes on a Mac or PC. When restoring, all of your data will be completely wiped out, forcing you to start from scratch unless you have a backup of the device.
There are two ways to backup an iPhone or iPad. The easiest is through iCloud. Head to Settings, iCloud, and then select Backup. You can also backup a copy to a computer through iTunes.
For now, if you’re worried, we wouldn’t recommend updating. If you do, make sure to have a recent backup.