I've spent a few hours now working with the Pa4x v.2.01 and I must say compared to my old Pa3x and Pa900 the workflow improvements on this Pa4x v.2.01 are superb and so easy to get around to make your music sound fantastic.

Just follow instructions carefully Duane. First do 2.0, then do 2.0.1.
It will take about half an hour to do so be patient because it is a really big update.
Be sure to follow the directions in the PDF to SAVE your Songbook and any styles in the USER or FAVORITE banks because everything is overwritten.
You will need to redo vocal settings, overall e.q., Locks, splits, slider assignments, controller assignments, etc. Fortunately it is quick and easy to do.
After you reload the Songbook, go through each entry to see if it is still pointing to the correct style locations. Out of 100 or so, I had about 3 or 4 that I needed to re-save, because they were pointing to Factory Locations to which I had written new styles. (I had saved those styles too!).
There are a few things the new OS does differently, but in all cases better. They renamed the Songbook Edit 1, 2, and 3, but they still have the same function.