Nothing to do with when you updated your infotainment software. It's the build date of the vehicle. Most 22 models do not have preheating - only the last month or so of that model year (july/august?).Thanks. Here is mine expirence. I have EV2022 with upadate from december 2022. The preheating should work. I was starting navigation to DC charging station about 20 min before reaching it. On highway with 120/130 km/h (sorry Europe ) speed, tempertur about 0 celcius degree. Charging speed start about 60 kwh , then maybe went up to 70-80 kWh. On the same charging point in summer / spring , the same car, it was 200 kwh. So it was disappointing for me. Maybe car needs more time for preheating. And I can not use on the same time car Nav and Apple CarPlay - google. When I start google maps then it cancel car Nav.
You can tell if you have preconditioning on your car as it will have a Preconditioning Option in the menus, instead of Winter Mode. Also when you navigate to the charger and the preconditioning is heating the battery, a little snowflake icon appears in the battery level indicator on the bottom left of the speedometer screen. MY23 models this changes to a little red squiggly line.
I've reverted to using Bluetooth audio/In car Nav. Android Auto is nice, but the occasional dropout makes it unusable. Android Auto is a great replacement for all the shitty infotainment/nav software that comes with many cars, but actually the EV6 one is pretty decent.