Most of the firestick users reached amazon for technical support because of how to unfreeze firestick. There are many reasons because of this firestick frozen such as overusing, overheating, using more free space beyond the limit, and many more. There is a common issue in firestick like same any other electronic which you can easily resolve by following the expert advice and you can also go through the website where step by step solution is given. For more details, you can contact the amazon team.