After buying my first 4k TV last month, I decided I wanted to get the most out of my purchase and upgraded from the 1st gen fire stick to the new, 4k capable Fire TV. To my dismay, after setting it up this morning I found out my 5.1 receiver is not HDCP 2.2 compliant, and therefore will not output content in 4k. I figured I could try connecting the FTV directly to the TV and then connect the TV to the receiver via Arc, but no matter what I've done I just can't seem to get the receiver to produce sound. I found I can purchase a converter that will make the receiver HDCP 2.2 compliant, but that's another $30 I'd rather not spend right now. I tried connecting the FTV to the TV via HDMI and then the TV to the receiver via optical, but turns out optical does not support 5.1 either. Any ideas?