I made a custom board with an ATMEGA328P-AU. I used a 16Mhz oscillator and there is the break out for the standard 2x3 ISP as well as access to FTDI pins.
I have an Atmel ICE programmer but I have never used one, and never burned a bootloader before! I really don't want to fry my nice custom board.
I have been looking around online for a tutorial on burning an Arduino bootloader to a fresh chip with the ATMEL ICE and a lot of what I find seems to require some prior knowledge of doing such a thing. Does anyone know of a really basic / dumbed down version? :-[
Would be really grateful, thank you!