Well, reviving this old fella, my DSTwo is "dead". I use my NDSLite for testing it. NDSLite reads my Ak2i's just fine. My DSTwo sat in a drawer for a good amount of time (years), unused. Things I have tried include, but are not limited to: cleaning contacts with alcohol, a known-good microSD card 2GB freshly formatted with only EOS on it (whichever was the newest version), taking the case apart visual inspection, made an offering to the gods. Of course, none had any positive effect. I may have thrown it in my N3DSXL and booted up GM9 to see if I could see anything. If I did, I had no success as I don't recall it. Yes I've thrown it in my 3DS to see if it works, it does not. N3DSXL is in sig. NDSLite is flashed with flashme firmware. It worked just fine when I used it years ago. No changes to the NDSLite since.
When I say "dead" I mean it does not even appear as a menu icon (or in the case of the NDSLite, it says no cart is inserted). Yes I have tried putting in the microSD different ways. Pushing to one side to get proper alignment, blah blah blah. Yes I have tried putting in the DSTwo differently, pushing it in hard, blah blah blah. If anybody recognizes my nick here, you'll know I'm not a complete idiot.
Any help is appreciated.