2008 Mitsubishi Lancer Evolution stability control problems

Mitsubishi motors of america has a AWD ECU software update for vehicles specifically driven in cold conditions. Dealerships and mitsubishi corporate have denied my claim to obtain this software because my car was sold in california and they have said it is not eligible. I take my vehicle every year up in the sierra nevada mountain range where temperature conditions are similar to any of the northern states within the service bulletin.

It was a cold winter day, I started driving my evo to a nearby grocery store. Enroute, the AWD system would throw a warning and a dashboard light lit up. I was concerned, stopped the vehicle and found no leaks or no weird noises. The vehicle was unable to shift into snow/tarmac/gravel mode. Fortunately I was not stranded on the road side. Upon further investigation I came to know that the acd pump failed and hence it threw an AWD error. Its costing about 2200 dollars to fix this issue.