i have 2 nds systems. I bought m3 dsreal bundles for both. I was able to get both m3 cards to work on only one ds. the other ds says no card inserted. any ideas why the this ds is not working? the one ubs card reader that came with it is not recognized by my computer. it says it is damaged. I am wondering if this has anything to do with it not working since i used the same usb reader to format both m3 cards
With the M3's sometimes the card is just a little too thin to make a good connection with the contact points. Try taking a piece of paper and inserting it with the cart, between the label and the inside of the DS slot. That will push the cart against the contact points.
Ok, a couple things. If both M3's work on one DS but not another then it is not an issue with the cards or the microSD's but with the DS. 1) What kind of paper did you use? Printer paper is probably too thin to help much. Notecard paper is best. But if you only have the thin paper then folding it in half for some extra thickness will usually work. 2) This is a DS or DS lite and not one of the newer DSi's, right? You're probably well aware but most flashcarts will not work on a DSi. You need one of the newer generation ones with an i in the name. Like the Acekard2i or the M3i Zero.