Installing Jusonix on a Fire TV Stick
All you need is the remote and five minutes. Downloader is a free app from the Amazon store: it fetches the Jusonix APK straight onto the TV.
Before you start: Jusonix cannot be installed on the Fire TV Stick 4K Select, released in 2025 — that model runs a new Amazon system that only executes apps from its own store, and this applies to any app installed through Downloader. Every other Fire TV Stick and Fire TV Cube is fine. To check which one you have: Settings → My Fire TV → About.
Install Downloader from the Amazon store
From the Fire TV home screen search for "Downloader" (the orange icon with a white arrow) and install it. It is free and published on the official store.
Allow apps from unknown sources
Settings → My Fire TV → Developer options → Install unknown apps, then turn on the switch next to Downloader. On some versions the entry is called "Apps from Unknown Sources".
Open Downloader and type the code
In the top field type the number below and press Go: Downloader recognises it and downloads on its own. You can also type the address app.jusonix.com.
5246037Install the APK
The download takes a few seconds. When it finishes press Install, then Done. You can delete the downloaded file when Downloader offers to.
Open Jusonix and load your playlist
On first run pick your language, then "Add playlist". If you would rather not type a URL with the remote, scan the QR code with your phone and paste it there.
Note: Jusonix includes no channels. To watch anything you need your own M3U playlist or Xtream Codes account.
From here on
The first 7 days are a full trial. Updates live inside the app, under Settings → Updates: it downloads and installs on its own, and the first time the TV asks for a permission — you grant it once and never again. Downloader remains as an alternative.
If something goes wrong
Downloader says the install is blocked
The permission from step 2 is missing. Go back to Settings → My Fire TV → Developer options and enable "Install unknown apps" for Downloader.
I cannot find "Developer options"
Go to Settings → My Fire TV → About and press seven times on "Fire TV Stick": the entry appears in the previous menu.
The download never starts
If you used the code, check all seven digits: 5246037. If you typed the address instead, it must have no "www" and no trailing slash: just app.jusonix.com. Downloader adds http:// itself.