Hi I need some advice. I have been using the MicroCode boot loader for several years with the PIC18F2550 and 4550. Now I need a chip with a 12 bit A/D ( maybe the 18F4553?) but I don't find any loader files for any of the 12 bit A/D. chips. In the past I've had DigiKey or MicroChip program the loader when I purchase the micro chip, then I would assemble the circuit board with the chip ready to flash. Our technicians load the latest and greatest program with a serial connection for their need at the time of installation. So I have a single circuit board that works for 3 different applications, technicians choose and load the program as needed. I would like to retain the ability to program the chip while it's in the circuit and have it be an understandable process for me to train technicians.

I've read several threads regarding this but I haven't found a solution that I like yet.

1. Should I skip the boot loader and change my serial connection so I can use the Pickit 3 for the in circuit programming?
2. Is there an app or program that will make the bootloader file I need for the microchips?
3. Is there another source for bootloader files?
4. Another approach completely?

To me it seems number 1 is my best option based on what I've read so far. Can I get some suggestions or links/threads to help me out?
Thanks
I'm using PBP3
Microcode Studio Plus