Well, reflashing the controller did not solve the issue with the dead LC-1's that I have hanging around. Still the same. As soon as you plug a sensor into them, the LED stops flashing and the sensor never heats up. I still have serial communications, and from that end, it doesn't show an issue. It's almost like one of the circuits or ICs for the O2 sensor has a short in it that kills it. I've visually inspected the entire unit, and can't find any visual faults. I suppose I could reflow all of the joints and see if it's a cold solder joint causing the problem...I was a little bit surprised to see that it uses a common Atmel microcontroller. Bosch offers an IC specifically for controlling their wideband sensors and there are other options as well.
Even so, the memory should not be corrupting spontaneously and Atmel typically has their stuff together, so I tend to doubt defective chips....unless Innovate has been using counterfeit Atmel product. (knowingly or not) When you have junk made in China, bootlegs get in the supply chain periodically even when you're dealing with supposedly reputable sources.