You need to have the MyBMW app on your phone which will download the new software. Later when you connect your phone to the car, it will transfer the new software to the car. After that, the car will let you know it's ready to update.
This is as what I said earlier. Service Inclusive becomes a black Friday special. However, unless you do a lot of miles, I don't think it worth the price now if it's still similar to the price last year.
When I bought the service pack for my F10 in 2016, it's £5xx and cover for 5 years/50k miles. I used it for 3 services plus a brake fluid change in total so well worth the money. But last year for my G31, the black friday price was about £1200 and cover for 5 years/60k miles. Considering first two services only cost about £900 (£350 and £550 for first and second service respectively) and I won't need the third service within 5 years, the price doesn't make sence to me.