The name of the file have nothing to do with the R4 saves not working. The R4 handles saves differently. Also, the setting there is for personal choice. Some people want the .nds in the file name of the save so they know what goes to what.
Not much, some people suggest using a piece of paper to make sure the cart is fully making contact with the ds. I'd try the paper first, then the tape.
Did you flash the card to support DSi's with the version 1.4? Also, was there any thing you did around the time that it started to get worse?
Just trying to figure out whats going on
Yep, if it was flashing it and you turned it off/pulled it out its bricked. You might be able to start the DSL patcher from your card and reflashing the broken one.
Hmm. Looks like the right one. What about putting a different microSD card in the problem acekard? I'm really lost on what to do, other than to get it replaced.
Hmm. I have had it not detected before, but I just would eject it and keep it in the ds and then push it back down and it would work. Where did you get the updater from?
So you get to the DS main menu and it just acts like there is no card present? Have you tried cleaning the contacts on the card and making sure there is no dust in the DS?
If you haven't bridged the SL1 then you can turn off at 0%. I did it.
Also I flashed my DSL and my friends DS phat yesterday. Going to flash another phat in a few days. Fun times
Ok, Pop out the card, but not all the way and put it right back in while the system is off. Then turn it back on. I had to do this a few times when I stuck my card in.