Is it possible to do firmware updates for these consoles?
$0.02
We are talking X10.....so I don't think so.
Most X10 gizmos use PICS (programable IC). Which generally, the programming is one shot. The X10 Icon and Nstinct remotes are a couple X10 products I am aware of that can accept formware updates. But generally X10 does not bother with circuits or "ports" for firmware updating since that adds to design and manufacturing costs. Which is anathema to X10.
Also, when X10 updates anything, they keep it secret. There is no acknowledgement of firmware version updates other than "the new gizmo works different than the old gizmo did". Apparently X10 tracks updates through date codes and internal stickers on the PIC. So basically, firmware updates are accomplished through exchange.