Last week, Apple had released the third beta version of its upcoming iOS 8.4. The update, labelled as build 12H4098c, is available for developers and can be downloaded via software update on iOS. According to a preview featured in 9to5mac.com, the release comes with a revamped Music application that includes a new user interface design, Up Next functionality, and a Mini Player.

The update has been avaiable for download only for seven days, but efforts to jailbreak iOS8.4 have already begun. Leading the pack is Stefan Esser who has claimed that he has broken the newly released beta. Esser, who is a popular developer and is known as "i0n1c" has posted a video of an iphone running Cydia on iOS8.4.

"Today I am delighted to share this video of a proof of concept iOS 8.4-beta 1 jailbreak that I was working on the last 4 days. The major vulnerability used in here was found right after the SyScan 2015 security conference when I was relaxing in Singapore from several weeks of training and conferences." said Esser in a report by WCCF tech.

With most hackers focusing solely on cracking iOS8.4, jailbreaking iOS8.3 looks even more unlikely. The previous version has proved to be harder to break, as it is considered to feature more security fixes in comparison to the update from iOS 7 to iOS8 in 2014. Apple has fixed 39 bugs in iOS8.3, giving developers less security flaws to work their way in with.

While popular jailbreaking tools like Pangu and TAIG claim to have met with success in jailbreaking iOS8.3, they have been known to make similar claims for iOS8.2, but never unveiled them.

There are rumors that the complete version of the iOS 8.4 update will be showcased at the upcoming Apple Worldwide Developers Conference (WWCD) 2015 to be held on June 8-12 2015.