I have a DM6467 development board and it was working fine with the pre loaded code. Then I booted it up and stopped the boot process as it was counting down (I pressed enter in the serial terminal to stop the boot process). After a while I tried to talk to it via the serial terminal and it would not respond. When I power cycle the board it sometimes prints "Booting PSP boot loader" then it either hangs or randomly prints partial messages like "Bo" or "Booti". I cannot stop the boot process, it does not respond to serial commands. Is there a way to re-flash the board via JTAG or something?