Apple continues to tweak their operating system with every update, which means that jailbreaks come at a slower pace.
As such, if your iOS 10.2 device runs on a jailbroken system, you may just lose the jailbreak along with the update once Apple releases the iOS 10.2.1 or even iOS 10.3 versions.
The Yalu102 Jailbreak for the iOS 10.2 was released just earlier this month but as of now it is in the beta stage. Not including the iPhone 7 and iPhone 7 Plus, Italian hacker Luca Todesco's release includes updates and added support for the iPhone 5s and later generations, the sixth iPod generation, the iPad Pro, iPad Air, iPad mini 2, and later generations.
The iOS 10.2 jailbreak comes after Todesco released the source code for others to use and he announced that he would no longer work on public iOS research.
With that, here are a couple of ways you may keep your jailbreak version for a longer period before OTA updates and the like start to hit iDevices..
Save Your SHSH2 Blobs
Just recently, Todesco recommended for iOS users, who had jailbroken their phones, to save their SHSH2 blobs while Apple was still signing the certificate for the 10.2. The bad news is that Apple has stopped signing it, just soon enough for the expected 10.2.1 update.
If you were able to save your SHSH2 blobs, then that's good news because you still have the power to restore the 10.2. However, if you didn't get the chance, there may just be another way.
Block Apple's Over-The-Air Updates
One other method to keep your jailbreak for as long as possible is by blocking over-the-air updates.
Once you do, Apple would not be able to download the updates onto your smartphone. The bonus is that the iOS won't have to keep reminding you to install an update that you don't even want in the first place.
This trick, however, entails downloading and installing the Apple TV beta profile on your device.
First of all, delete the current software update by going to Settings and into Storage & iCloud usage. Once there, look for the pending software updates in Manage Storage, then delete.
Open the Safari browser on your device and download this. Once done, install the tvOS 10 beta software profile and reboot your phone.
When you follow these steps, you will no longer see the pending software update on your settings, and the iOS will no longer bug you to install the updates. This works by "fooling" the device into thinking that no update is available. Each time it looks for an update, it would only see the tvOS beta.