The latest Apple signing update has announced recently. After the iOS 12.3 public release, Apple has stopped signing iOS 12.2 and lower. If you are running iOS 12.3 or iOS 12.4 beta versions, you are no longer able to Downgrade to iOS 12.2 version. However, the users who have saved the SHSH blobs will be able to downgrade to iOS 12.2 version.
If you are a jailbreaker, and the usual advice from the jailbreak tool developers is stay on the lowest possible iOS version. But if you have not saved your SHSH blobs for iOS 12.2 and running iOS 12.3 or iOS 12.4, then don’t just lose your hopes of Jailbreaking. iOS 12.2, iOS 12.3 and also iOS 12.4 can be jailbroken and install Cydia or Sileo. We have bought you the complete jailbreak tutorials to Jailbreak iOS 12.2 – 12.3 here.
When it comes to iOS versions, iOS 12.4 is still in beta testing but, the iOS 13 will be announced at WWDC next month so iOS 12.4 should be released for public soon. The latest iOS public release is iOS 12.3. The revamped TV app, Apple TV Channels, AirPlay 2 support for smart TVs, and plenty of bug fixes are some of the noticeable things in iOS 12.3 update.
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So, don’t worry about your iOS version. If you don’t jailbreak, then update for the latest releases of iOS versions to enjoy the latest features of Apple and if you like jailbreaking, then just don’t care about the iOS version and you have plenty of solutions to install Cydia or Sileo on your A7-A12 iOS device. But it is still better to use a Semi-Jailbreak method like Unc0ver, Chimera. As something is better than nothing, iOS 12.1.3 – 12.4 users also can enjoy Cydia or Sileo with above methods.