Hacking How do I "enable" Rumble Pak in DSTT menu?

[AC/DS]

I have an EZ-Flash 3in1 but the DS games that support rumble pak do not recognize it.
GBA games work ok (through YS Menu), but I cannot figure out how to make the rumble pak function with DSTT.
(My previous cart was Cyclo DS, and it worked with it). Thanks and sorry if this has been asked.

EDIT: just found out it works when a game is launched through YS Menu. Weird.

 

[Bri]

As you discovered, the 3-in-1 isn't supported by the official menu (nor is any GBA expansion cart supported, including the eWin which used to be bundled with the DSTT). You have to use GBA ExpLoader or YSMenu to use GBA, rumble, or Opera browser with a GBA expansion cart.

-Bri