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- 2022 Hyundai IONIQ 5 RWD / 2016 Suzuki Vitara AWD
that’s what my dad has been saying too, but he wants to be sure it actually needs an upgrade because it’s not like we can just ask Mercedes all they said to him is it’s “costly” nothing else
Updating the firmware on tbe Audio20 unit will cost £50-£60 in labour charges at your dealer. It's best to get it done when the car is being serviced, because it is cheapest for them (the car is already booked-in and will be connected to STAR) so the quote is more likely to be on the cheap side. That said, I doubt he'll see any visible differences.
The BMP firmware update can be done DIY on your PC.