Today, as I promised there is the tutorial for CFW (Custom Firmware) for iOS 10.1.1 iPhone 5S. Please read the description carefully and watch the entire video to prevent bricking the device or for a better understanding of the process!
Please keep in mind that this method is under development and might not be compatible with all iPhone 5S models or revisions, it is subjected to changes, additions and modifications as per research conclusions. This method requires the iOS version to be signed so you can't use it after the iOS version was dropped by Apple (usually after a new version is being rolled).
All errors that usually occur are documented in the F.A.Q. page linked down bellow.
The procedure is not simple and prior iOS components / firmware modification knowledge is strongly advised.
This video contains multiple proofs including a side by side comparison with iCloud Status page and the actual phone.
All these proofs are here to prevent any doubts from people who don't have a compatible device and run in errors.
It is highly recommended to read the F.A.Q. page before you begin in case you get any errors, as this is a work in progress and errors might appear.
This method comes with no guarantees and should be treated "as is". I am not liable for any damages you do to the device by using the method. If you run in any issues with the device, a simple iTunes restore to the latest untouched firmware should solve it.
Not affiliated in any way with Apple Inc.
F.A.Q Page (READ IT!): https://fce365.info/f-a-q-cfw-bypass/