If you just got one of these, make sure you update to the latest software (8.1.7b), as it fixes an incompatibility with Scientific Atlanta CableCards. The stock software was more than a month old.
The TivoHD will update to the newest software when you connect to the service to download guide data. You can force a connection and update on the Settings -> Network screen.
The TivoHD will update to the newest software when you connect to the service to download guide data. You can force a connection and update on the Settings -> Network screen.