For users who have jailbroken their devices with TaiG Jailbreak Tool V2.0.0, please update TaiG 8.1.3-8.x Untether through TaiG source (apt.taig.com) or 3K source (apt.3kzhushou.com). There is no need to jailbreak again.
At this point the untether is only on the apt.3kzhushou.com repo. To install it, add the source repository to Cydia and the "TaiG 8.1.3-8.x Untether" will appear in the Changes tab.
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