I’m not too sure exactly because I used the Printrbot bolts hex file from the original simple printer. I could try other hex files and then make adjustments via gcode.
I have the DFU Bootloader and using the FLIP software to write precompiled hex files to the board.
I’ve looked at the process for getting other boot loafers, I can do that, but the rest of the process to compile, USB drivers, the avrdude fuse settings etc is really confusing. I’m trying to avoid that.