Downgrade tvOS 11 to tvOS 10 / 10.2.2
As of This Day (10/02/18) Apple Is Still Singing tvOS 10.2.2
WCCFTECH made a quick guide to downgrading your tvOS from software version 11 to 10 (or 10.2.2)
Please note: this method involves restoring from an IPSW file and using iTunes therefore it will erase and restore your device to factory settings. However if you are on tvOS 11, this is crucial for the current jailbreak as it is not compatible with tvOS 10.2.2 and below.