On a Facebook forum I am member of, a salesman at a reputable lotus dealer posted the following:
“All US cars received a software update when they first arrived at dealers weeks/months ago. Lotus didn’t elaborate on what the update entailed. The latest communication instructed dealers to verify all cars had received the update, not a new/additional update.
From my understanding, this addressed issues discovered on earlier production cars, not necessarily related to emissions.”
So it appears that the software update is not “detuning” the car or anything like that. I imagine it was a software patch to fix the issues that other members were experiencing.