So we had to unplug and re-plug in the TiVo and it booted, completing the upgrade.
It also took 3 calls to Time Warner to get the cable card working.
Call 1) Called the number that was on the TV Screen saying "To activate this cablecard call XXXXXXXX" I call that number it is general TWC support. Woman says it's activated but I can only get the broadcast channels. She says don't worry I'll transfer you to Cablecard support, they'll get this worked out. Great! I'm on hold about 2 minutes when I get a cryptic message "Mailbox not authorized to use voicemail. Please try again later. and hung up on.
Call 2) Explain I want to be transferred to Cablecard support and explain what just happened. Put on hold. He comes back and gives me the direct number for cablecard support, he can't transfer me because when he calls the number "they want information."
Call 3) Cablecard support- they were surprisingly efficient. Says basically if the box ever loses power or the cablecard removed I'll have to call back to get it reactivated.
But anyway TiVo is up and running. I have to say I am a bit disappointed so far. The delay before tuning in a channel is noticeable. Worse it seems more difficult to setup a series recording then the cable dvr was. I have to setup a "One Pass" and turn off a bunch of things I don't want/care about. Also, the included remote is broken, it sticks when I use TV volume and I have to take the batteries out to reset the remote about half the time I use volume. I have a better remote coming Monday which better work.
Amazon.com TiVo C00260 Roamio Slide Pro DVR Remote Electronics
Also the built in apps, YouTube, Netflix, Amazon Prime Video, are all inferior to the same apps on an Amazon Fire.
Finally, and I knew this ahead of time, stupid Time Warner Caple includes the copy-protected flag on ALL cable channels so I can't copy a show to my PC.