I just ran the software update tool on the StellarMate (it has been unplugged for a couple weeks) and it is failing an update to the Pi firmware.

Terminal window last lines:

Errors were encountered while processing:
E: Sub-process /usr/bin/dpkg returned an error code (1)

Is there a trick I need to know to get the firmware to update?

I have upgraded my equipment and am ready to give the Mate another try, especially since it appears we have a new Topcam driver for the guide cam. Also, this is running the bleeding version.