Service Update - how does it proceed ?

TivoHD, 2TB disk, reboot, now the window is up since 2 hours:

"Preparing the service update,
this may take an hour, possibly longer"

Question: Beside waiting for 24 hours, is there any other thing i can do to check whether it is proceeding normally ?

- The TivoHD does not ping on the IP address it usually has, i do not see it doing anything on the network.
- The TivoHD has only the green light on.
- The TivoHD does not react to any remote key.

How would it normally proceed ?

thanks