Having a lot of problems while running games directly from either SD/MMC or GBA Flashcard(s). Currently I have a SD Kingston 128mb, and I will have a SD 2gb Kingston card again, when it gets back from Kingston. I also have an EZ-Flash II 256M, and an XG2 Flash 2005 512M.
Anyway, the problem is this, when running games like Super Princess Peach, Pokemon Trozei, these last two I have only gotten to run successfully from a GBA Flashcard, not the SD. Also Phoenix Wright: Ace Attourney tends to lock up a lot during gameplay when ran from an SD card.
Usually what I have to do is, take out either the flashcard/NEO-KEY and blow on the contacts, then I usually blow inside the GBA slot to make it work properly again. I do not think I have gone a single day since I've had the MK3 without having to do this, it's really getting on my nerves. One thing I have noticed, is that if the you get the Nintendo DS logo without the classic Nintendo logo below it, it will not load the menu at all. For the menu to load properly both the Nintendo DS + Classic Nintendo logo have to be present. Also, if the class Nintendo logo is blurred, it will also not load.
My current NDS is a Version 1 Firmware, currently unmodified. In other words, I have not yet upgraded to the Flashme Firmware V7 yet, but I plan on doing so once I get my Triwing screwdriver.