Yes, yes, this is an old thread but it is not an old topic. I have spun my mouse so much trying to get a HID bootloader working that I have worn my desktop. I have banged my head on things such as trying to refresh my copy of the 4550 firmware in the MCHPUSB BOOTLOADER\BOOTLOADER-Firmware for Pic18f4550 because my current firmware is screwed up from earlier editing. I have other concerns also such as dealing with interrupt addresses, changing the clock to agree with what I am using. Tired.

Three feathers and a glass of milk to you folks who were successful with this dog. I might come back to this later....maybe! In place of this bootloader where it appears I will spend many more hours trying to get the thing to run, I just emptied two bucks from my wallet and placed an order on Ebay for a USB-RS232 adapter. Will it work? For two bucks I think it is worth a try.

But getting back to this thread, I seriously compliment those who cracked this thing, I have a great deal more learning to do, just not enough time or desire to do it. But got to keep the faith..........in Microchip!

Foggy