I got a Puzzle Bobble cartridge today so I could test the F3 motherboard I got in the job lot a bit back.
The motherboard itself doesn’t do anything at all without a cartridge so I wasn’t sure if it worked or not.
The cartridge seemed to be a different region than my motherboard is but the lockout is a physical one rather than a software based one and requires cutting the posts out on the pin header sockets. With this done, the game fits and it booted up no problem.

Happy this thing works and Puzzle Bobble is really addictive.

More information on converting F3 games and boards can be found here