I purchased a my calc about four months ago. It has ROM 1.7 [01/18/1967] (I have no idea when the manuals might change). The manual that accompanied it has no mention of reset other than memory reset via the memory manager screen, nor does the manual include a troubleshooting guide. I did not know of a key based reset before this list. I know that I RTFM and didn't find a solution. He could have too.