I do remember viewing both of Dave's teardowns for the 1104 and 1204, and went back and re-watched them. I don't know why I was thinking they were different front ends. Old age, I guess. I haven't seen much chatter yet about a successful "upgrade" of the 1104.
Right but its still just a TFT, so the question becomes can the SPD3303X code be modded to run a SPD3303X-E? And that gets to the fun bits
OR is it an identical codebase with just a bitflip? but that would make it a boring mod :p
It's probably like the other devices where the codebase is the same, but there are one or more XML configuration files that determine the feature set. Once you get root access through the console, it's straightforward. The problem is, hacking the root password for the image is difficult and requires linux system image reverse engineering skills and plenty of time.