I'm having some trouble getting the bootloader burned onto my Reprap Motherboard V1.2. I've read the instructions on the Reprap Wiki over and over, but there is just not much information there. The instructions I'm refering to are at (http://reprap.org/wiki/Motherboard_1_2# ... Bootloader
). Several Google searches turned up very little about this process and how to diagnose problems when they arrise.
So here's what I've tried so far. I'm trying to use the Arduino software to burn the bootloader, so I installed the latest Sanguino software modifications to Arduino. Now Sanguino appears on the "boards" menu, so I select Sanguino there and then choose the menu option of "Tools -> Burn Bootloader -> w/ USBTinyISP". Then I get an error message, which I sure would be very helpful for me to share with you, but I don't have it with me right now. I will try and get the exact text from the error message when I get home and will add it to this post later today.
My primary question I have now is, do I need to have my Reprap Motherboard powered when I attempt to burn the bootloader? I've built my board to be powered by the reprap usb connection, as shown here http://reprap.org/wiki/Mendel_USB_and_power_connector
. Would it be best to use the usb power while trying to burn the bootloader, or is there another method of powering the motherboard while burning the bootloader?