Hi all,When installing all of the PMDG products in the proper order, number 5 says "737NG 600/700 Model Update (updates the models to 800/900 standards)."Is this update only for those that do not have the 800 and 900 series or do I need to install this update even though I have the 800 and 900 series? Thanks.Ken.

Ken-With the 800/900 you gained greater functionality in the VC of those airplanes than was available in the original 600/700.The model update allows you to have all the new functionality in the 600/700 so that you have the same functionality across all four airplanes.So- in short- if you own both NG products- then install that model update.