Alan B Pearce wrote: >> To let you know: There is a customer who is making many tests with a >> device >> of us and therefore we constantly have to send re-programmed PICs. >> So my thought was to give him a PicStart+ and a simple utility to >> let him re-program the PICs by himself, only by sending a new hex >> file to him. I don't want to let him install a complete MPLAB for I >> know, that he will make >> many "strange things" for he is somewhat technophobic.... > > If that is the case then you really need an encrypted bootloader, as > the customer could just as easily obtain a copy of MPLAB directly from > Microchip, and look at the hex file with it. He's already sending the customer the HEX file, so security isn't the issue. It looks to me like he doesn't want to support having the customer clickety-click thru MPLAB to program a new part. There are too many things for a unsophisticated customer to mess up doing it that way. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist