Had you experienced any problems with the DS resetting when inserting the SC? Can't get past that. Maybe it's different DS firmware - mine's v3.
I want to be happy too
Mine was restarting when I switched the supercard until I plugged it in. I have flashme installed and it kept restarting.. I put in my superkey and held select while powering on, then launched the DS game so superkey ran. After superkey booted, my ezflash II cart loaded flashmp and I was able to swap it without the power going off. I'm not sure if it was the superkey or having it plugged in that made it work, but it did it so I don't care how it worked
BTW, flashmp will restore the firmware to 1.52. Just load up the new 1.63b bin on the card and restore in GBA mode. Everything's working great now. Maybe i'll make a new thread to get anyone's attention who is in the same situation.