Before everyone gets side tracked on fixing hugely unlikely problems such as 5 bits flipping exactly wrong, should one not focus on the elephants in the room, such as the trim wheel that is too hard a to turn and too slow to act or the prospect of sensor failure/misinstallation/miswiring etc?
I don't believe there is any indication that either crash was due to a flight computer upset, so it is irrelevant whether the flight computer will be improved until the rest of the system has been brought up to snuff.
Yet there is thus far no substantial public comment on the proposed fixes of the lethal defects demonstrated to exist.
If Boeing wants to ensure the plane does not return to service, they are going about it the right way.