Recently upgraded to a Hopper 3 and joey 4K. Hopper 3 is in the living room connected to a Sharp 80" 844U (1080p). Joey 4K is in the den hooked up to a 65" Vizio P series (2016 model). Recorded the new episode of Planet Earth II in 4K from channel 540 to the Hopper 3. When I try to play it back on the joey 4K the screen goes black and the Hopper crashes. When the Hopper reboots I get a pop up error message on the joey (#1305) "Broadband connection lost" and it prompts me to unplug the Hopper for 10 seconds and reboot. After 3 trys which produced the same black screen and crashed Hopper 3 I called Dish tech support. Explained the problem in detail and was asked to repeat the process with the tech on the line. Turned on joey 4k and Vizio tv, pushed the DVR button on the remote, scrolled down to the Planet Earth icon, pushed "select" and black screen and crashed Hopper 3. The tech then ran diagnostics on the Hopper 3 after it rebooted as well as the joey 4K. She then proceeded to tell me that since the Hopper 3 was not connected to a 4K tv that it was impossible to record or play back any 4K content. At this point I asked to speak to tier 2 tech support and was told that my only option was to schedule a tech onsite visit. I reluctantly agreed and this afternoon he showed up. He ran diagnostics on both boxes and found no issues. I then demonstrated the problem and sure enough the Hopper 3 crashed as soon as the Planet Earth 4K program was selected from the joey 4K. We then tried playing the 4K program from the Hopper 3 on the Sharp tv and to our great surprise it played fine although at 1080P the native resolution of the Sharp. Even more shocking was that once the program was playing on the Sharp I could now select it and play it on the Vizio from the joey 4K in 4K! Any attempt to initiate playback on the Joey 4K without first starting playback on the Sharp (Hopper 3) resulted in a system crash and reboot. The tech concluded that this was a Dish software issue and should not have occurred. He offered to replace the Hopper 3 but said I would lose all of my recorded shows and still have the issue. I plan on replacing the Sharp 844U in the near future with a 4K set. I recently replaced all the components in my AV system with 4K capable units (including HDMI cables). If I still have this issue after replacing the 844U with a 4K tv I will be asking Dish to remove their equipment since they have not honored the contract that the Hopper 3 as well as the joey 4K can record and playback 4K content. Very disappointed that after 12 years as a Dish customer that I may be one of the growing number of "cord cutters".