(It's a Blue DS Lite) It's more complex than that... This DS lite is in prime condition. When turned on it instantlyrecognizes GB games, whether manual or auto, AND when a normal DS gameis in, it will start the DS game (even if theres a gb game in) BUT here's tjhe glitch, wiithout the GBA game, it won't recogniza ANY flash cart (DS2 or DSoni, just tested secodns ago in several other consoles to work) It won't recog. the F cart with or without the settign on auto or manual, and or the GBA game IN or OUT., remember the sdhc chips are set firmly in their contacts hole as rechecked before and aft test-still working on all except the blue DS lite (console of concenr) I have tried blowing in the holes, reinserting, several times untilo im blue in the face, no change..... BTW, I tested the Flash carts on 3ds XL, reg 3ds, New 3ds, DS litees, DSi XL, etc, all working .. EXCEPT the blue DS lite model, I'm trying to get it to recognize. example if I have Golden Sun in GBA slot, unit set to auto and call of Duty in DS slot, start it, starting will result in CoD starting. IF the fully working Flash carts are there instread? it goes straight to GBA game or whe set to manaual doesn;t even show the F cart. REmember, both carts and their chips are firmly set and working everywhere excepot here.. ANY ideas? I'm stumped!!!!!