iH8Sn0w has released an update to iFaith 1.4.1 which adds support for the Apple TV 4.4.4, accepts Tiny Umbrella 4.4.x/5.x.x blobs, and resolves several other issues.
● Added Apple TV 4.4.4 (9A406a) support.
● TinyUmbrella iOS 4.4.x/5.x.x blobs are now accepted.
● Resolved rare DFU detection issues.
● Resolved issues with 8GB iPhone 4 Models.
● Resolved iPhone 3GS issues with factory certificates/Error 21 that occurred during restore.
● Resolved iOS Detection issues.
● Removed kill-switch that accidentally got distributed in iFaith-v1.4's public release.
● Don't expect A5 device support until a DFU bootrom exploit is publicly available.
You can find instructions on how to use iFaith here. You can download the latest version from here.