[mcbridematt]

The software and/or device you are trying to trick would be able to determine it's true location using the MAC address of other WiFi APs in its vicinity - the same way a map app on your smartphone can without GPS and cellular network assistance.

If you can use Ethernet (e.g with a dongle on the Fire stick) and turn all the device radios off then there are less inputs available for the device to determine it's location.