Update: Apple today posted a new version of the update, build 13E237, to fix the activation problem for all affected devices. It's currently available to download over-the-air or via iTunes.

Original story: Apple has temporarily pulled the iOS 9.3 update for older iDevices following some issues with device activation. On a support page for the update, the company said that affected products could get stuck during the activation phase of the update if users didn't happen to remember their Apple ID passwords.

Devices affected include the iPhone 4S, 5, 5C, and 5S; and the iPad 2, third- and fourth-generation Retina iPads, and the iPad Air. Apple's page doesn't mention the iPad Mini or iPod Touch lines, but according to this Twitter account that tracks iOS updates, the iPad Mini and Mini 2, and the fifth-generation iPod Touch are also affected.

While Apple works on a fix, the company says that you should try to reset your password or disable the Activation Lock feature at iCloud.com or connect the affected device to a computer running iTunes. Apple said in a statement to iMore that it would be posting a fixed version of the update "in the next few days," and we'll update this post when it does.