> They answer me that Flash device do not need to be verified > at multiple voltage... I got the same impression, yet the official documents still state that a production progger should verify at the extremes of the power voltage. But those documents contain other errors, so why not this one too :) Yet a producer of programmed PICs might want to use a production (multiple-voltage-verify) progger for non-technical reasons (for instance to avoid blame). Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics