Make an account on amazon.co.uk (if you dont have one)
Add a billing address to the account (Important)
Plug the Stick in, and follow instructions
When you get to main page press UP and LEFT to search (magnifying glass)
enter downloader , click it and install it!
go into settings my fire tv Developer options and turn unknown sources ON!
press home (the house on the remote) find downloader and open it!
enter url akts.uk/kodi3 and press download - it should download and install it!