Just writing this review after getting off the phone with Amazon Fire Tech Support for an hour. So after multiple, unplug wait 30 sec, plug back in and constant re-iteration of what the Fire Stick is doing. I was told to call Samsung and tell them that this Amazon device doesn't work with their TV..... Really Amazon????? I had multiple "solutions" given by the tech and proved each one wrong, was told they will ship out a new power supply because they are sometimes bad, took it to another TV, non 4k, and it works just fine, then the solution was to call Samsung and tell them this amazon 4k firestick doesn't work with their 4k TV. All I can say is buyer beware.