A new 2.3 version of the jailbreak utility has been released that includes Cydia 1.1.19. You can download it from here.
If you've already jailbroken you can install the updated untether from the Changes tab in Cydia.
● How to Jailbreak Your iPhone 6 Plus, 6, 5s, 5c, 5, 4s Using TaiG (Windows) [iOS 8.4]
● How to Jailbreak Your iPad Air 2, Air, 4, 3, 2, Mini Using TaiG (Windows) [iOS 8.4]
● How to Jailbreak Your iPod Touch 5G Using TaiG (Windows) [iOS 8.3]
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