Configure your computer to run as an fastSwift server. Note: This script only works on Linux distros and not in macOS.
All you need is an SSH server with an user login credentials (if possible specialy for Swift execution), FFKit.swift at /home/fastswift/FFKit.swift and Swift compiler installed.
For Ubuntu and for Raspberry Pi
curl -s -L http://goo.gl/hPvdsn | sudo bash -s swiftexec swift
(You can replace swiftexec by another username and swift by another password)
curl -s -L http://goo.gl/hPvdsn | sudo bash -s $USER
If you have fastSwift installed, in your iDevice, go to Settings > fastSwift > Custom server, enable Custom Server, and enter credentials.