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Message: <blockquote data-quote="2old4this" data-source="post: 8347" data-attributes="member: 174998">just to be clear...the "hexfiles" you refer to are program and data files which are loaded onto the chip(s) of a wafer card. The structure and operation of those files is a more or less arbitrary design decision of the person/hacker who created the software. In practise, most filesets consist of a file for the main program chip (eg PIC16f84) and a data file for the secondary chip (eg 24c16 EEPROM). In that case, it is almost always the case that the file for the eeprom cotains the provider and key data, with the program file containing the logic for using those keys (and for controlling features like remote-update, anti-reset, etc.). The keys/idents/etc contained in the eeprom data file (whether it is formatted as a "hex" file or a "bin" file) are the same as you see published in lists. 2old</blockquote>