For owners in colder climates, this was a game-changer.
Here is the hard truth that MG forums are full of: The OTA function is mostly broken for 2023-2024 models. mg4 software update
If you want the critical VCU update to fix LKA or the rear seatbelt alarm, you cannot DIY it. You must book a service appointment. For owners in colder climates, this was a game-changer
Troubleshooting: If the car says "No update available" but you know a newer version exists, your VIN has not been whitelisted by MG for OTA. You must visit a dealer. Verification: Turn the car back on
Perhaps the most vital MG4 software update is not for the screen, but for the battery. Early MG4s had a very conservative charging curve. At a 150kW fast charger, the car would peak at 80-90kW and then drop drastically after 50% State of Charge (SoC).
The Fix: A dealer-applied BMS update (often labeled "BMS V2" or "Charging Logic Refinement").
Post-Update Results: