Originally posted by cec33:
If the dealers could flash the '03 code into older models could be a way for Nissan to make some extra $$ instead of giving it to the aftermarket guys or some looney on E-Bay.
I Flash the PROM in my Corvette; takes a special electronic unit & software, plus a spare PROM is helpful.
I've only had my Xterra 5 days, but it could very well have a replaceable PROM that can be ordered from the dealer.
New BINs are developed & released throughout the life of the platform; it's how the factory updates the ECU to address problems. GM is very good at this.
I don't have a repair manual (yet), so I don't even know where to look for the ECU to see if it has a replaceable PROM or if the entire ECU requires re-programming, but if you know what you're doing, it only takes a few minutes to Flash a PROM (or ECU). If you have a manual, look for something like "memory calibration unit"...
And no, I'm not an expert; I just know a little about *my* cars...