Originally Posted by
Lincoln96
Happy to report that I was able to fix the card reader.
Even happier to report that the project I could never load (Eagle Clock) has now been uploaded successfully! What did I learn? It seems that reformatting and downloading new firmware must be done without a project open in the program. Otherwise the firmware gets corrupted somehow. Does that make any sense at all?
And because I haven't been kicked in the groin enough yet today, I put the original "bad" card back in the reader, with the program running, and no project open, formatted, loaded new firmware, and now that card is working too.