A few days ago, several security researchers discovered that the jailbreak was a reality in the latest version of iOS, specifically in version 12.4. Although in recent times, many users had given up this method, it seems that the community quickly got down to work.
But, as expected, the Cupertino boys they have fixed that bug by launching a new update. When it seemed that iOS 12.4 would be the latest version of iOS 12, Apple launches iOS 12.4.1 to solve this serious security problem, a problem that had already been patched in iOS 12.3.
Yes, although it sounds strange, Apple had detected in iOS 12.3 that security bug that allowed the device to jailbreak, however, for reasons beyond those of us who don't work in the software development team in Apple, iOS 12.4 reopened that door so that jailbreak friends could customize their devices again, although after the disappearance of the official Cydia application store, it is much more complicated to know which ones with the tweaks we can really trust and in which not.
In the details of the update, which is now available to all users who have any version of iOS 12.x installed on their devices, Apple states that they have Fixed security issues in addition to correcting some minor errors and improved stability Of the device.
If you had planned to jailbreak or have not done it yet, you should stay away from this version. For now, Apple continues to sign iOS 12.4 but most likely it will stop doing so in a few days, to prevent jailbreak friends from freeing their device to fully customize it.