Have a spare cart to sell - Works but I can't test since I don't have the required controls, but the game does boot (just has an I/O error since I don't have the right I/O board and controls.) Tests fine otherwise.
I am selling this through eBay. $100 starting bid, BIN $150. Shipped for $10...
NetDIMM restock!
Also have 1 NAOMI in stock now too.
https://shop.fabtekgames.com/products/refurbished-sega-naomi-netdimm
https://shop.fabtekgames.com/products/refurbished-sega-naomi-motherboard
It sounds like you are having connector issues with the NAOMI. This is a super common problem. Make sure you have applied lots of pressure (more than you feel like would be ok) to be certain the NetDIMM is fully seated.
You can also try hitting both the NetDIMM and the NAOMI with some contact...
I can confirm that the wifi.txt file is always empty on working images.
You may want to try my modified image and see if that helps: https://www.arcade-projects.com/threads/improved-wipi-netbooter-sd-card-image.34484/
Apologies for the necro-post but I have two games in my possession that qualify on this list that I didn't see on the list:
Cabal (Sits on black screen flashing "Press 1P Start / Press 1P or 2P Start" with no audio)
Magical Date EX (Sits on checkered background with static "Press Start" text...