Quote Originally Posted by mattbarn View Post
It can be done if you find a way to hold the MCU in reset while you flash the ROM.
I haven't paid attention to MCU architecture, but it "should" have a RST pin. Before Moates came out with the Ostriches I had an old school EconoROM 3, it would pulse the RST pin of whichever MCU after flashing to reboot it.