I have the same problem with my MG HS. If bought before October 2020 then you have system alerts on the dash when the vehicle is turned on, All the alerts are are sound alerts by the computer which are loud bongs like a seat belt alert noise but you get this for every safety feature the car has. So it bongs to tell you that your wheels are not straigh when parked. The lane assist on or off. Cameras blocked with dirt. When parked and turn off and exit vehicle you get the bong for ages telling you to take your keys. And other features also. Plus the car has a triple beep when exiting from passenger side or if walk past front. Very annoying. So the update is abit of a fix and tone down of all this stuff. No horn beeping and constant binging for the safety features. Most MG Garages don’t have the file update so be prepared for a wait of mess around. Also it is chargeable depending on dealer and your issues. I’m still waiting to get mine updated and I bought it in September. Not a priority in lockdown. Car works no other issues so will get it in when I can.