Chinese Pirate Multi-Cart with two different menu screens???

[treismac]

The other weekend I stumbled across a NES (Famicom-adaptor) Chinese Pirate Multi-Cart.  It advertised 42 games on the label, including Milk and Nuts and Chack 'n Pop, so I gladly purchased it.  After cleaning the game and powering up my NES, I was disappointed to find only 20 games on the Mappy mascoted menu, but overinflated number of games in Chinese multi-carts is supposed to be par for the course from what I understand so I took the disappointment in stride.  Well, tonight I popped the game in and instead of getting the Mappy menu screen with 20 games I got a totally different screen with 22 games, different music, and an unknown mascot.  Pleased and a bit confused, I tried to figure out how to switch between the two sets of games, and the best I can figure out is that it has something to do with hitting/holding power or reset, but nothing I try gets consistent results.  Does anyone know what the deal is?  How can I consistently switch between the two menus?  Are separate menu screens a common occurrence for Famicom Pirates?

Here is the cart:



Here is the pcb:



Here are the two menu screens:

[BonBon]

I have the same cart but on famicom just reset the system to switch between the two menus

[fcgamer]

I have some like that, though with dip switches to switch between the menus.

[MaxXimus]

A friend of mine has that cart as a famicom cart

[aha2940]

I had it but it had only one menu, all the 42 games were shown in the mappy-mascot menu. maybe a later release of the one you have.