wrote in message
...
On Jul 26, 5:37 pm, wrote:
On 25 Jul, 21:43, Chris wrote:

Of course they can - incorrect data downloaded to cards can easily
makethem inoperable.

I've not yet come across r/w memory that can't be reset if theres
dodgy data on it so unless they're upgrading any software there may be
on it I can't see how it could happen. And if thats the case you have
to ask yourself why.

Most microcontrollers have had settings which once written prevent you
ever reading out or changing the microcode again.

Yep, but this area isn't going to be written to by the application code. It
will (or won't) be blown deliberately during manufacture.

tim