Find search (In the APP store) and enter downloader
You should see an APP called Downloader, click that
Download the APP
When it’s done downloading, click Open
Allow Downloader access to photos, media, and files on your device.
Click OK at the start-up screen
Enter the URL of the APK package (You either find that here or get it from support)
You might be asked to approve the Downloader to be able to install unknown Apps. To do this go to Home > Settings > My Fire TV > Developer Options > Install Unknown Apps > Downloader (Should now say ON)
Now go back home and find the App again (Downloader)
Unless the App was closed you should be able to continue and simply click Install (If not, go back to Enter the URL of the APK …)
Follow the instructions on the screen
When the installation is done click Open
Google Chromecast with Google TV
Go to Settings on the device
Go to Device Preference
Go to Storage
Go to Transfer files over local network
Click Turn on and note the username and password
Go to the home screen
Open your file browser on your computer (We are using a Macbook)
Open Network
Open Shield
Click Connect as.. input your username and password
Go to Internal
Go to Download
Drag the APK to the folder
Open X-plore on the device
On the left side (Internal storage) go to the download folder and click the APK
Install the APK
Google Chromecast with Google TV
Go to Google Play Store (Go to APPS in the top menu)
Search for downloader
Download Downloader by AFTNews
Open Downloader by AFTNews
Enter the URL of the APK (You’ll find the URL here)
The downloader should start the download of the APK and automatically open it when it’s done.
You might have to do additional steps, but they should be displayed when the APP launch.