Apple has been doing a lot of hard work with iOS 9 by frequently rolling out updates for the firmware. A lot of iOS betas have been rolled out to the Apple Developer Program and the Public Beta Program, including the recent iOS 9.2.1 betas. Two betas for iOS 9.2.1 were seeded, after which Apple introduced iOS 9.3 beta 1. And just when we thought we would see no more of iOS 9.2.1, the firmware has been released to the public.
iOS 9.2.1 Update
The iOS 9.2.1 update is now being pushed to all the iOS users. Of course, the .0.1 update is just a minor one and probably brings some bug fixes, performance improvements, and security tweaks. It fixes the issue that does not allow you to install an app while using an MDM server.
If you are interested in getting the iOS 9.2.1 update, unlock your iOS 9 device and go to Settings > General > Software Update. You can connect your iOS device to your computer for updating it to iOS 9.2.1 via iTunes. The new update is not a very exciting one, but we should not neglect the fact that it makes the firmware more secure, smoother, and more stable. Those looking for features can wait for iOS 9.3.
Should you update?
If you are waiting for an iOS 9.2/9.2.1/3 jailbreak, then we must suggest you to not update to the latest iOS version. Well-known hacker Luca Todesco has said that iOS 9.1 is easier to jailbreak than the latest versions of iOS, and he suggests that you avoid updating to iOS 9.2 or iOS 9.2.1 as an iOS 9.1 jailbreak is still possible.