I would love to get this PCM update! but I don't see any recalls related PCM on http://www-odi.nhtsa.dot.gov
2011 or 2012 Cayenne, S, Turbo, etc.. other than a headlight recall. Could you please let me know where you found the recall information. Maybe nhtsa is not updated?
Mine is 2011 Cayenne S with several issues with the PCM unit running 2.7.