Although later than expected from Apple, the Cupertino-based company rolled out the COVID-19 notification platform to devices that had remained on iOS 12. in mid-December, as is the case with the iPhone 6, iPhone 5s and several iPad models. While it is true that the presence in the market is very low, there are still users who continue to use them every day.
A month later, Apple released a new update that fixed some of the problems with notifications of this update. As usual once a reasonable amount of time has passed since Cupertino they have stopped signing iOS 12.5 so it is no longer possible to revert to this version but we can only install iOS 12.5 .1.
Despite the fact that iOS 12 was released over 2 years ago, Apple continue to offer security updates for iPhone 5s and iPhone 6, as well as iPad mini 2, mini 3, iPad Air, and 6th generation iPod touch, models that have not been updated to iOS 13 and later versions to iOS 14.
This could be bad news for all users who have one of these jailbroken devices, but especially for those who iOS 12.5.1 did not please him. If you are one of those users, the best thing you can do is restore your terminal from scratch, delete all the content you have stored, and start the setup process again.
If the problems persist, you will have to wait for Apple to release a new version of iOS 12, to see if hopefully any issues your terminal may be having are resolved, or visit the Apple Support forums to see your terminal issue. found in other users and thus be able to find a solution.