Our kit need to soldering the 'AV' to 'link port pin1'  Please check attached picture.  

The other seller's need to soldering the  'AV' to 'link port pin3' 

Sodering to 'AV' to 'link port pin3',  the GBA game console can't link the pokemon games.

So, we change the design. You need to soldering the 'AV' to 'link port pin1' now.  And, your GBA game console still can link pokemon games.