To choose the right Bootloader, have a look at the FBGA maker code
on the RAM chip at the phyCORE-AM335x.

####  OLD  (two banks) ###################################################

- D9MGZ (512 MB RAM standard KIT option)


####  NEW  (one bank)  ###################################################

- D9PWF (512 MB RAM standard KIT option)

- D9PSK (256 MB RAM)