Help dumping an educational multicart

[mrmxy]

Hi, I'm trying to dump an educational cartridge that came with a keyboard famiclone (Cyber Computer), this one: https://cdn.discordapp.com/attachments/433098586603913216/1194460811821842462/20240109_225523.jpg
(I'll open it if necessary but I don't see a way to do it without breaking the cartridge)

Video of the games: https://www.youtube.com/watch?v=ftzc3hLoHDI

I'm using an Aliexpress Kazzo. I tried this script from NesDev with different size_base values but it only produces the menu. Using the unrom script produces the menu and a few broken title screens (I'm attaching that file). Are there any other scripts I should try?

[lancuster]

I think that the ROM you uploaded here is incomplete (given the presence of samples in the game, the dump should weigh at least 512 kilobytes). I also advise you to try specifying 241 or 365 mappers, as in the Asder educational multicarts.

[lancuster]

I tried to restore the menu of this multicart, but that's all I managed to do.
By the way, when the Subor keyboard is turned on, the title screen in front of this menu turns on.