Updating or restoring a jailbroken iPhone to iOS 8.4.1 will return the device to stock functionality. In other words, do not update to iOS 8.4.1 if you want to keep your jailbreak. iOS 8.4.1 cannot be jailbroken by TaiG 2.
There is no jailbreak solution for iOS 8.4.1. This update closed several vulnerabilities, rendering TaiG 2 useless for jailbreaking.
It remains to be seen if iOS 8.4.1 will ever be jailbroken. It's more likely that developers and jailbreak teams around the world will focus on the upcoming release of iOS 9.
The last chance to jailbreak iOS 8.4 with Apple Music is here. It could be only a matter of hours or days until Apple stops signing the iOS 8.4 firmware, which will mean an end to iOS 8.4 updates. It's official: the replacement iOS 8.4.1 closes several security vulnerabilities, making a jailbreak with TaiG 2 impossible. Act now if you wish to jailbreak, and your device is not updated to iOS 8.4. Here are instructions on how to update to iOS 8.4 and jailbreak:
While iOS 8 allows apps to "run" in the background, many of these tasks are optimized to save battery life and improve performance. Those looking for true multitasking capabilities may be interested in Watchdog Pro. This tweak gives iOS apps the ability to fully run in the background, just as if they were still running in the foreground.
The jailbreak tweak DockBar makes launching specific apps a breeze from anywhere in iOS 8. The customizable app launcher bar can be invoked using an Activator gesture, which provides speed and efficiency for often-used apps. The DockBar interface will appear right in front of home screen icons or running app windows.