thats a great error. It tells us exactly what’s wrong. It would seem the firmware does n0t have exfat drivers (which is OK) so it means we must format the SDcard as fat32 (which is ideal anyway.)
we will need to make a new Emunand and redeploy the sthetix package again on a clean sd card.
you may want to use
NxNandManager to copy your game saves. If yiu don’t care about game saves you can skip this step.
Next you will need to use something like
rufus to erase everything and format your SDCard as fat32 with 32k block size.
Then recreate you emunand and redeploy sthetix and you should be good to go.