hi dave

yes found the file as part of the references for tiny bootloader

i have mplabx , but compiler for pbp loaded only

it appears to need c compiler ??

would like to rewrite file so that is loaded as pbp file and compile in pbp , where i can take a copy of the my existing chip structure and make the hex file

doing this approach allows for an easy migration of other chips support for the bootloader using pbp

have you a version example that could be used in pbp to make the hex file