I've noticed growing interest in resetting Tivo's due to suspected corruption on Roamio's.
There are some new-ish kickstart codes, that might be relevant. I couldn't find any discussion on these so assume
: this will likely ERASE your data.
"Kickstart code 50 - wipe db partition"
"Kickstart code 59 - Repeat Guided Setup"
"Kickstart code 67 - perform SQLite integrity check"
"Retailer Reset code - initiate factory reset"