Power Control Module upgradeable software

The car was dropped off a local shop and we were informed that the "PCM" had quite possibly gone out; however, after doing some research on the power control modules, apparently they do not typically "die", but rather need a "software upgrade," if there is such a beast it is best to take it to the dealership - thus the reason for the original question. I have gotten a recall letter and it does say something about the brake mechanism but am wondering if that could be part of the "software upgrade" the article referred to?

yes,that it what it states under the recall.read the recalls to the right of this page,i see 3.