VVV said:For PIC's, just open MPLAB, click File.. Import and import the hex. Then click View. Program memory. You will see the disassembled code.
Right click on the tabs at the top and uncheck them all, except "Disassembly".
Select the first line of code, right-click on it and select "Output to file" to save the file as text. Then you open that file and edit it, but again, you need to figure out many unknowns.