Why use a bootloader?

[mister_e]

If you're using a USB PIC, you may want to use Microchip's Bootloader. (this one use the USB port) OR PICCoder

If you have MicroCode Studio plus, you already have bootloader firmware in... unless you have to purchase MicroCode Loader.(this one use RS-232 port)

Other option, is to find a freeware, I heard good comment on Tiny Bootloader.(also RS-232)

Once you have any bootloader firmware, you need to dump the firmware .HEX file in your PIC first by using your favourite PIC programmer.

Once it's done, you just need to compile your code and use your bootloader utility to update your PIC.

That's it!

EDIT: See difference from one bootloader to another... DEFINE LOADER_USED 1 have to be used.