I am working on booting our Overo Fire board as fast as possible from cold boot.
Is there anything like test pads on Overo Fire to modify sys_boot bits to optimize the boot sequence?

The problem is sys_boot[0:5] seems to be 0b101111 by default on the board, meaning it polls boot devices in this order:
USB -> UART3 -> MMC1 ->  NAND
This results in ~0.5sec delay before seeing the first message "Texas Instruments X-Loader 1.5.1" from X-Loader.
I would like to change the bits to 0b000110 to poll MMC1 first as we only use a SD card.