"My Atari Flashback Portable doesn't recognize the card! What can I do to fix it?
Make sure it's formatted properly. Many AtariAge members have found that the SD Association's Card Formatter utility produces better results than the built-in utilities in Windows or Mac OS."
That program only offers FAT16 formatting and I understand that it needs to be FAT32. Also it didn't work anyway when I formatted it. There are no options in that program.
I've tried FAT32 formatting on my own on both Win and Mac and the 2GB sandisk card is still not recognized on my FB9 3050 model.