No luck with finding someone with working hardware yet. I found one collector with a different revision of ODEM, but they are understandably not interested in a trade, and they don't know if their ODEM works at all. I do have a driver disc that came with the GDEV/ODEM, but is unreadable. I'll attach...

No response from OfficialDevJeff so far, but I'll try hard4games next. Thanks!

So I got my hands on a GDEV, complete with ODEM card, cable, and a USB/EXI adapter, and it seems to accept reset commands from the PC via ODEM, but it doesn't run code. Whenever I try to run one of the demos, the GDEV resets, then comes up with a black screen with white text that says "Checking...