mikeymike: In my view this depends on IF old boortom is enough to get
all applications and specified hardware to function...
For example: (I don't have enough details so this is speculation):
I seem to remember announcement of (july?) update that was supposed to
help on USB problems. IMHO, usb is quite essential part of mobo and if
it does not work (or work reliably.. I can't tell) without Rom upgrade
then in my books it shoudl be covered by warranty.
For something like nicer boot-menu .. Well it's not essential, so it
alone ain't reason for chip replacement.