We currently recommend using "Wireless File Manager" app to Transfer files to Fire TV.
Using the app is easy and fairly self explanatory. Still, if you need some help getting started we have detailed how to use the app in our  previous post here.

This post is part of the Transfer files to Fire TV series. 
Following are the steps to follow in order to transfer files from/to your Amazon Fire TV/stick using Easy Fire Tools. 
We have a new telegram channel that focuses on FireTV Stick, you can find it here.
  1. Remember, the Fire TV/stick and android/ios/windows device to be connected to the same WiFi network.
  2. Open Easy Fire Tools and open the app menu(top left corner) and choose "File Manager".
  3. Now select the operation you wish to perform from the dropdown on the left end of the screen.
    Push to send to TV stick
    Pull to transfer from TV stick
    Uninstall to uninstall app from TV stick.
  4. Then choose the location to where you wish to copy to from the dropdown on the right end of the screen.
    choose SD (internal).(skip this step if copying from TV stick)
  5. Then choose the file from the device that you wish to send to/get from TV stick.
  6. Then tap on the file you wish to send and hit OK.