Apple stops signing iOS 12.4 after patching jailbreak exploit


Stop the madness
There's no turning back!
Photo: Charlie Sorrel/Cult of Mac

Apple has stopped signing iOS 12.4 following the release of iOS 12.4.1. That means that it’s no longer possible to downgrade again from the latest version of iOS if you’ve already upgraded.

iOS 12.4.1 fixed a security flaw which allowed an iOS jailbreak to be created for the first time in ages. It’s no wonder Apple doesn’t want you turning back!

Prior to the recent jailbreak, interest in jailbreaking had nearly died out completely.

There are a few reasons for this. One is that Apple has tightened up enough vulnerabilities that it’s much more difficult to create jailbreaks than it once was. Another is that a lot of the features jailbreaking allowed, ranging from custom settings to video recording, are now part of iOS.

Finally, Apple’s bug bounty means that it will now pay $1 million for information about iOS vulnerabilities. Hackers must choose between customizing their iPhone and, say, buying a house.

Patching vulnerabilities

From Apple’s perspective, patching vulnerabilities isn’t just about stopping jailbreakers having fun, though. There’s a real concern that potential exploits could be used maliciously by less ethical individuals. It therefore makes sense that it would want to stop people using iOS 12.4 as quickly as possible.

This is almost certainly the last iOS 12 update we can expect.  Apple is set to release its next-gen iOS 13 on September 13. That will bring about a whole lot of new upgrades.

Has iOS 12 served you well? What are you most excited about from iOS 13? Let us know your thoughts in the comments below.