Jailbreaking is the process to remove hardware restrictions on iOS through the use of software exploits. Jailbreaking permits root access to iOS file system and manager and allow the download of additional applications, extensions, and themes that are unavailable through official Apple App Store. Below is the timeline story about Apple iOS jailbreaking news and update.
23 Aug, 2015 – Apple has stopped signing iOS 8.4. If you accidentally update to iOS 8.4.1 you won’t be able to restore or downgrade to the firmware back to iOS 8.4.