I've been having the same problem with ch 816 819 821 for weeks. I've got a 9200, rented for the past 22 months.
When I called they claimed ignorance also. Had me reboot, diagnose switch, the usual.
Finally forwarded to senior tech who said even though there is a v222 software, it did not apply to my unit and would not help. He wanted to format my drive to solve the problem. I said no as I would lose all recordings. He offered me three free ppv movies as a consolation? I said no, I didn't think that was going to solve the problem. Offered to replace unit then with a refurbished 9200. I said no, if anything, I wanted a new 9242 at this point. He said ok but I had to pay $75 installation??? I said no way was I paying anything and then we got cut off! Spent the next hour trying to get through, but the hold times were crazy by then.
Is this just the 9200's that have this problem? Anyone have a 9200 rental that was updated to v222, solving the problem?