After waiting anticipatingly for a couple of weeks, finally received the device. Formatted an 8Gb SD card, placed some sio2sd.bin on there but no amount of key combos is letting me update the firmware. I can use the CFG tool, found i have to have turbo off to use it on the atari 800.
For the sio2sd.xex file, I used this patch file near the bottom of the post made by user phaeron. Any other file on the SD card will lock up the computer. I'd get a menu but then nothing would be responsive except unplugging and plugging back in.
So far I tried blue max (worked great), and ultima 3 hung up the atari when I tried to proceed with the default formed party of chuckles, etc. Thinking I need to turn write protect off on certain ATR files.
How do I do a cold boot, I've forgotten because when I hit reset it pulls up blue max instead of reading from the SIO drive.