I have currently a white DS lite and a DSi XL that reads my original R4 and 2 different Acekard2i's just fine, so I thought what the hell, I was gonna give my cousin 1 of the Acekards for a Christmas. Well his is a red refurbished DS lite from gamestop and it won't read any of the 3 flash carts I have when my other units read them with 0 problems at all. How exactly might I fix this? I'm borrowing it for 1 week and hope I can resolve this problem, so he can be playing.