Follow the instructions outlined for Option three to install the experimental builds from the Official Tor APT server.
Add the following to the end of your /etc/apt/sources.list file.
deb http://fteproxy.org/deb/ stable/
Then execute the following as root to add the fteproxy signing key to your keychain:
gpg --keyserver keys.gnupg.net --recv 6B898EE18FBA6390 gpg --export 6B898EE18FBA6390 | sudo apt-key add -
sudo apt-get update sudo apt-get install fteproxy
ServerTransportPlugin fte exec /usr/bin/fteproxy --mode server --managed ServerTransportListenAddr fte $IP:$PORT
sudo service tor restart
bridge fte $IP:$PORT [bridge fingerprint]where $IP and $PORT are the values for your custom bridge in step 4.