Didn't think it was possible but my fan is blowing even harder now after last update. I'm starting to wonder if John Deere has the fan license on these bad boys?
I really just think you've got a faulty SP3. Noone else seems to have experienced this fan issue that i've read about. From this forum it seems that near all folk experience exactly the kind of fan activity they have always experienced. You on the other hand seem to have had nothing but fan noise.