thought I’d share his device, he is out of stock but has made 5 of them. I was able to test one myself but it didn’t work with Waterworld, Jack Bros, insecticide or Hyper Fighting.
I don’t know if other home brews will have same issues.

Should message and follow him though, I don’t think he is a member but let him know we are interested in making more

https://www.youtube.com/channel/UCzDOB8S1MO1rgT_blZhwbaw/about

Tweets by TRP_RetroMods

https://trp-retromods.ca/index.php?route=product/product&product_id=50

ORIGINAL SOURCE FORUMS: http://forum.retrode.org/index.php/topic,392.0.html

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You’ll need to update the Retrode firmware to the latest version to read some games. Hyper Fighting and Red Alarm are two well known problem carts. I think the latest firmware is 0.26b or something. It’s been awhile since I dragged my Retrode out, so I may be wrong there.

I’ll have to look into it later, last version I know of was 25.A