i've successfully entered in bootloader mode
but i cannot start the sd boot uprade method.
I tried with 3 different 256 sd card, with different usb writer
and to plug or not the usb cable in the magician, but every time
nothing happens. It remain in serial or usb mode or if i soft reset the device reload the old rom.
There is a method or a command in romupgrade to force the sd boot? like d2s but with reverse function??