To change your country settings on an Amazon Firestick
Go to the Settings tab in Manage Your Content and Devices .
Under Country Settings select Change.
Enter your new address.
Choose a supported country for Amazon Fire TV, and then select Update.
In the notification that appears, select learn more and then select Transfer your Kindle account to.
On your Fire TV device, go to Home > Settings > My Account. Select Deregister, then return to My Account and select Register. You can now use your Amazon Fire TV in the supported country.