Has the summer update (20.4.2) gone out to the general users yet? I had a Roamio that updated a couple weeks ago and then proceeded to fail one tuner. Got the box replaced and the new one installed but the installation downloaded and installed 20.4.1, previous revision. Funny situation is that our two Premieres are now snappier through the menu's than the Roamio. I went to the priority update page and put in the new TSN just in case but the Roamio has not received the update yet. Currently all four tuners are working fine on this box, course my old box did prior to the update as well.