Some owners reported that the "Battery Health Mode" (limiting charge to 80%) went missing after certain updates.
At its core, a firmware update for the MG4 is a modification of the permanent software programmed into the vehicle’s Electronic Control Units (ECUs). Unlike a smartphone OS update that primarily changes the interface, automotive firmware governs the actual physics of the car. For the MG4, this includes the Battery Management System (BMS), the Motor Control Unit (MCU), the braking system, the climate control logic, and the infotainment display. Consequently, an MG4 firmware update can alter everything from how aggressively the regenerative braking engages to how quickly the DC fast-charging curve tapers off. mg4 firmware update
This report details the current state of firmware updates for the MG4, covering update methods, known issues, and the 2026 model refresh. Current Update Methods Some owners reported that the "Battery Health Mode"
Updates related to safety or warranty-covered fixes are typically free of charge . For the MG4, this includes the Battery Management
Features a redesigned AC page where the top status bar remains visible.
Leave the driving firmware to the robots in the dealership.