Thanks to your help I have now a dumped playable ROM, thank you very much! I have a couple more questions though, and I'd love it if you could help me understand them.

1) why is fceux not working with mapper 289? And why is it that when I dump the ROM, the ROM gets generated with another mapper but 289 and I have to change it manually in fceux's debugger tool?

Also I'd love to contribute this ROM to the no intro community, is this ROM correctly dumped? How can I check that?

Thanks in advance for your help

Hello Bootleg Games Community, I have a bootleg cartridge named 64 in 1 by Dynavision, and I want to dump it using the Sanni Cart Reader V5 Retro Game Card Dumper, but no mapper seems to be able to do the work correctly. I'd love it if you could help me or guide me on how to learn to dump bootleg cartridges like this one using this tool. I'll attach a photo of the PCB in case it's of any help. Thanks in advance for the help