Programming bootloader of a PIC microcontroller

Question

I got a old used picdem board for free from my friend and I have a bootloader to it. It's old one got erased.

I don't have ICD to program the bootloader, is there any way I can program the bootloader using usb or develop something by my own? But the problem is since the bootloader got erased by accident the usb won't be detected when plugged in.

I'm using PIC18F4550 microcontroller

Sorry about that, it is "PIC18F4550" and the board is "microchip.com/stellent/…" — Vikyboss
– Vikyboss, Commented Nov 5, 2011 at 20:42
You can program this microcontroller by any other programmator, even self-made. First try to google give me this — sll
– sll, Commented Nov 5, 2011 at 20:54
they aren't that expensive, consider this one piccircuit.com/shop/7-pic-programmer — kenny
– kenny, Commented Nov 5, 2011 at 21:33

Martin · Accepted Answer · 2011-11-10 13:45:23Z

3

No, you can't program the bootloader over USB, because the bootloader contains the USB code. A blank PIC does not understand USB. It is not even running it's oscillator. Get an iCP01 or an ICD.

answered Nov 10, 2011 at 13:45

Martin

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