Hm. On my Kingsaver, I know once I get it into programming mode, I can revert to the last mode it was in by holding escape, then plugging it in, and unplugging it. Escape does what FN+ALT+H does. Perhaps you can hold Menu or Capslock or Control while plugging and unplugging to get it to go back into programming mode then setting FN or seeing if it can be reset to the default settings?