Tuning Adapter (High-Split) Converter Problem

I did a self install. Coax passes though the TA, USB hooks up ( they're still using the old mini-USB or whatever that thing is), power on, and make the activation call. The Edge was working before the call ( or old data from the Cisco was being used?).

Funnily enough, the Roamio worked fine without the TA but not with it. During the activation call they had me reset the TA after doing something at their end. The Roamio appeared to work fine after that so I hung up. However it only worked until the TA finished rebooting (kind of slow I guess), so no golden bullet there. Looking at the Roamio devices page I could see the tuning adapter status cycling between present and not present. Reboots of either or both boxes didn't help. The USB connection wasn't working between them. 

I split the coax into both the old TA and the new TA and used the old one while the new one downloaded a firmware update. About 24 hours later I swapped to the new TA and the Roamio showed a solid USB connection status. All the channels were working. 

Which all just confirms what has been said here already about Roamio TA's. I'm glad I knew what to expect, since Cox was mostly clueless. No need to send techs out. It just needs to sit, connected to Cox, probably after activation, long enough (maybe 24 to 48 hours, maybe less) to update its firmware.