Had a great DTV experience last week. Got another 771 error message again. HD channels were out for 24 hours. Called and the tech came out the same day. He replaced the SWM 16 with the 4K LNB and even replaced the cabling that he said was chewed up by squirrels. HD PQ even looks better. I asked if he had the 4K equipment on the truck but said to call DTV about that. If they don’t give free upgrades, is it good to get the from Amazon they had some good pricing on them. Thanks.