after the 3rd visit at the ocean king temple i arrived the golden sun symbol there.. i get a map piece where the 3rd boss is ... it says i need 2 stamp the old map on the may in bag... i mean stamp... can somebody tell me how to stamp the old map onto the map? ( my friend play using nds and he close the screen and it stamp! how about emulator?) sry for my bad english

All you need to do is minimize the emu the restore from min.