Saved Data, Sleep Mode and Yoshi Mode - Super Mario Advance
Jan 3rd 2008, ID#11639 Saved Data, Sleep Mode and Yoshi Mode
Clear ALL Saved Data:
Press L + R + A + B + Start + Select (when turning on the GBA).
Unlock Sleep Mode:
Select + R (Select + L to deactivate)
Unlock Yoshi Mode:
Complete Super Mario Brothers 2 (you don't have to collect ALL the red coins). In Yoshi mode you have to find 2 Yoshi eggs which are hidden behind the potion doors. There are 2 eggs for each stage.