With software updates 18.104.22.168 and 22.214.171.124 for the Fire Stick, it appears that Fire TV devices have changed when they enable HDCP encryption of the video signal. According to my test results, Fire TV devices used to only enable HDCP when copy protected content was being played. Since the 126.96.36.199/188.8.131.52 update, and continuing with the latest 184.108.40.206/220.127.116.11 update, Fire TV devices now enable HDCP immediatly at boot up. It used to be that connecting the Fire TV to a non-HDCP compliant display resulted in normal operation until you tried playing copy protected video, which would then cause the screen to go blank. Starting with updates 18.104.22.168/22.214.171.124, if connected to a non-HDCP display, during bootup of the Fire TV you will see the white Amazon logo followed by the colorfull Fire TV Support logo as expected, then it immediatly goes to a blank black screen.