Greetings All,
The trainer board has now been tested with the arduino bootloader:
http://www.elinux.org/BeagleBoard_Trainer#ATmega328_.28Arduino_Hardware_Compatible.29
all new trainer boards will be shipped with the arduino bootloader pre-installed. in addition we have posted a lite version of avrdude called avrgal which is easier to cross compile and is geared towards easy upload of arduino sketches and/or avr code:
thanks
Dave