@danluu

At the very least, you should be able to poke a paperclip into a tiny hole in the dashboard, and reset to factory software from ROM.

Not off-topic: this is why we abandoned the whole concept of a "Kitchen Range" and filled in the same need (better and cheaper) with a modular cooking table of many smaller products that do NOT depend on chips.

In particular, the big job (today) of an oven, can be done by a $129 Roaster Oven whose control system is one rheostat.

http://brander.ca/range