Even if you update it, it will still show a SxS until you have it running for a few minutes. You also need to go in and turn OFF the "Service Interval" or it'll eventually tell you need to change your oil.....
One more thing, the PIDD defaults to ethanol fuel mode when you do an update.
If you do not have ES, you can do the updates using a "power up" cable connected to the gauge connector (where ever that is on the new 850s) by the PTO shock tower and a 12V battery. The full blown PIDD update (not the trails only update) will take about 30 minutes, so unless you want to burn down the engine, get a power up cable.