[U-Boot] Booting to an alternate bank on an ADS512101?

Hi,

I just got an ADS512101, so I have a few beginner questions on it.

Is it possible to boot to an "alternate" flash bank on this board, like the "pixis_reset altbank" command does? I know that jumper P4 is supposed to do a flash recovery, but that doesn't seem to work for me (I'll email the manufacturer about that later). And even if it did, that's not exactly what I want, since it requires me to physically move the jumpers.

Instead, I'd like to be able to write a new u-boot.bin into some address in NOR flash, and then reset the board and boot that U-Boot instead. If for some reason this U-boot fails, then a hard reset will bring me back to the original U-Boot.