I’ve just started installing 2020.4.11 which, according to various accounts is the MS/MX range upgrade which was coming to new cars. I’d be surprised if this is what it is as my car is September 2019 build (ie 5 to 6 months old). I’ll just have to wait and see but if it is the range upgrade I suspect it’s no more than changes in EPA methodology and won’t really make any difference to the real range, especially here in UK where we use WLTP.