Do you have a link to the Wikia where you found this info ?
Might well be that it's being
worked on, but I'm pretty sure it isn't done...
Consider this: the bleeding edge trunk release here:
CHDK Download - build 51, revision #404for A720IS presents a zip which
only contains DISKBOOT.BIN.
In order for manual load to function you need a '
PS.FIR', or for DryOs cams a '
PS.FI2'
You could try putting a dummy PS.FI2 on your card, that should at least show you the
option for
firmware upgrade.
wim