Mg4 Firmware Update

The MG4 Electric has rapidly become one of the most popular EVs globally, but its software experience is often a primary topic of discussion among owners. Unlike some competitors that push massive monthly changes to your driveway, the MG4 firmware update process is a bit more traditional, requiring a mix of dealership visits and specific manual checks.

This article breaks down how to check your current version, what the latest updates (like R59 and R63) actually change, and the reality of Over-the-Air (OTA) capabilities. 1. How to Check Your MG4 Software Version

Before seeking an update, you need to know what you’re currently running. MG separates its software into two main components: the MPU (the Android-based infotainment system) and the MCU (the module that controls how the car interacts with buttons and hardware).

Standard Method: On the main infotainment screen, swipe left to find Settings, then scroll down to System. You will see your "Entertainment system version" listed there.

The "Secret" Engineer Menu: To see more technical details, go to the version screen and tap the version number 5 times. When prompted for a passcode, enter 200519. 2. Latest Major Updates & Features

MG doesn't always release public "patch notes," but community feedback and dealer bulletins have identified several key versions: Version R59 (Common in 2024–2025)

This is considered a "must-have" update for many owners because it addresses significant driving-related bugs:

One-Touch LKA Disable: Adds a shortcut in the drop-down menu to quickly turn off Lane Keep Assist.

Cruise Control Improvements: Adaptive Cruise Control (ACC) now remembers your last distance setting and adjusts speed in 5 mph/kph increments with a long press.

Bug Fixes: Resolves issues where the car would unnecessarily slow down in slight curves and improves Bluetooth stability. Version R63 / R71

Later versions like R63 and R71 focus on the Body Control Module (BCM) and overall system stability. These often fix "ghosting" issues with the 360-degree camera and refine the HVAC (climate control) so the target temperature more accurately matches the actual cabin temperature. 3. The OTA Update Myth vs. Reality

While MG’s marketing often mentions "Over-the-Air (OTA) capability" via its Service-Oriented Architecture (SOA), the reality for current owners is more restricted: Charged a fee for software updates? (MG4) mg4 firmware update

Part 1: The Anatomy of MG4 Software (Coding vs. Infotainment)

Before we discuss updating, we must clarify a critical distinction. Most owners confuse the Infotainment screen (the big tablet in the middle) with the Vehicle Firmware.

5. Intelligent Battery Heating (IBH)

For the Trophy long-range (with the heat pump), a firmware update unlocked "Intelligent Battery Heating." This pre-heats the battery when you navigate to a fast charger, dramatically improving winter charging speeds.

Conclusion: Knowledge is your best tool

The MG4 firmware update is not a magic bullet, nor is it a terrifying risk. It is simply maintenance for your car’s brain.

To summarize:

If you are experiencing cold weather charging below 80kW, a steering wheel that fights you, or a battery that drains overnight, book a service visit specifically for firmware.

The MG4 is a brilliant piece of engineering let down by rushed initial coding. With the right updates, it transforms from a frustrating "nearly there" EV into the class-leading hatchback it was always meant to be.

Disclaimer: Always consult your local MG authorized service center for firmware updates. Self-performed modifications to vehicle firmware void your warranty. This article is for educational purposes based on owner community experience up to 2026.

Staying current with your MG4 firmware update is essential for optimizing performance and resolving common software bugs, such as those affecting the infotainment system and MG Pilot safety features. As of May 2026, MG has transitioned many models toward over-the-air (OTA) capabilities, though significant core module updates often still require a dealership visit. Why Update Your MG4 Firmware?

Firmware updates for the MG4 provide more than just new menu icons; they often address critical system logic: Guide to Firmware Update | Lenovo US

MG4 Firmware Update: What You Need to Know

The MG4 is a popular electric vehicle (EV) that has been making waves in the automotive industry with its impressive range, sleek design, and eco-friendly features. As with any connected device, firmware updates are essential to ensure the vehicle remains secure, efficient, and equipped with the latest features. In this blog post, we'll dive into the world of MG4 firmware updates, exploring what they are, why they're important, and how to perform one. The MG4 Electric has rapidly become one of

What is a Firmware Update?

A firmware update is a software update that is designed to improve the performance, security, and functionality of a device's firmware. Firmware is the software that controls the device's hardware components, and updating it ensures that the device remains compatible with the latest software and technologies.

Why are Firmware Updates Important for the MG4?

Firmware updates are crucial for the MG4 because they:

  1. Improve Security: Firmware updates often include security patches that protect the vehicle from potential threats and vulnerabilities.
  2. Enhance Performance: Updates can improve the vehicle's performance, including its acceleration, handling, and range.
  3. Add New Features: Firmware updates can introduce new features, such as improved infotainment systems, enhanced driver assistance systems, or new driving modes.
  4. Fix Bugs: Updates can resolve issues and bugs that may be affecting the vehicle's performance or functionality.

How to Perform an MG4 Firmware Update

Performing a firmware update on your MG4 is a relatively straightforward process. Here's a step-by-step guide:

  1. Check for Updates: Ensure your vehicle is connected to the internet via Wi-Fi or mobile data. Then, navigate to the vehicle's settings menu and select "Software Update" or "Firmware Update."
  2. Download the Update: The vehicle will check for available updates and download the latest firmware.
  3. Schedule the Update: Choose a convenient time to perform the update. The vehicle will notify you when the update is ready to be installed.
  4. Install the Update: The vehicle will automatically install the update, which may take several minutes to complete.
  5. Restart and Verify: The vehicle will restart, and the update will be verified.

Best Practices for MG4 Firmware Updates

To ensure a smooth and successful firmware update experience:

  1. Always follow the manufacturer's instructions.
  2. Ensure your vehicle is connected to a stable internet connection.
  3. Update your vehicle in a well-ventilated area.
  4. Avoid interrupting the update process.
  5. Verify the update was successful.

Conclusion

MG4 firmware updates are essential to ensure your vehicle remains secure, efficient, and equipped with the latest features. By understanding the importance of firmware updates and following the simple steps outlined above, you can keep your MG4 running smoothly and enjoy the latest advancements in electric vehicle technology. Stay up-to-date, and happy driving!

For most MG4 owners, firmware updates are primarily handled by authorized MG dealers during scheduled maintenance or if specific faults are reported. While there is hardware capability for over-the-air (OTA) updates, they are currently rare and typically limited to minor infotainment patches rather than critical control modules. Common Firmware Versions & Fixes Part 1: The Anatomy of MG4 Software (Coding vs

R59 (Latest Major Update): Significant improvements to ADAS, including a shortcut to deactivate Lane Keep Assist (LKA), intuitive Adaptive Cruise Control (ACC) button responses (5 mph jumps), and improved Bluetooth stability.

R46: Fixed frequent phone pairing issues and iSmart connectivity bugs. It also updated the AC control page for Trophy models.

R33: Introduced a constantly visible top bar for the AC page and allowed one-click LKA deactivation on SE models. How to Check Your Current Version On the infotainment home screen, tap Settings. Navigate to System or System Info.

Look for Entertainment system version or MPU/MCU version numbers (e.g., 1300R59). Update Methods MG4 Software updates | MG4 EV (2022 to 2025) Forum

🔁 How to Update

There are two main ways:

  1. Over‑the‑Air (OTA) – For infotainment and some minor modules.
    Go to Settings > System > System Update on the main screen. Connect to Wi‑Fi (or use the car’s built‑in 4G) and follow the prompts.

  2. Dealer update (USB / diagnostic tool) – Most vehicle control modules (BMS, VCU, EPS, etc.) require a dealer visit. These aren’t OTA‑capable on the MG4. If you’re experiencing specific issues (e.g., heated steering wheel not working, erratic ACC), ask your service centre to check for outstanding campaigns.

4. Charging Curve Optimization (CCS DC Fast Charging)

Perhaps the most critical update. Early MG4 firmware limited the DC charging speed aggressively to protect the battery. Later updates (mid-2023 onwards) smoothed the charging curve, allowing the car to hold 80-90kW for longer before tapering. If your car takes 60 minutes to go from 10-80% on a 150kW charger, you likely need an update.

3. Dealer Workshop Update (Diagnostic Tool)

This is mandatory for deep-level vehicle control modules (VCU, BMS, EPS).

1. Over-The-Air (OTA) Updates

These are the most convenient. Tesla popularized this method, and MG is slowly rolling it out.

Step-by-Step Guide: How to Perform a USB Firmware Update

Warning: Only perform this if you are comfortable with technology. An incorrect file can disable your screen. Ensure your 12V battery is fully charged (not just the high-voltage traction battery).

Preparation:

  1. Locate a USB drive (8GB to 32GB is ideal).
  2. Format it to FAT32 (exFAT will not work in older MG4 builds).
  3. Download the correct firmware for your specific region (EU, UK, Australia, or China). The file name usually contains the model (e.g., MG4_EU_xxxx.zip).

The Process:

  1. Turn on the car (READY mode). Do not attempt this in ACC mode.
  2. Turn off the headlights, climate control, and radio to reduce 12V drain.
  3. Insert the USB drive into the left USB port (the one with the data icon, not the charging-only right port).
  4. On the home screen, go to Settings > System > System Update.
  5. The screen will detect the USB drive. Tap "Update now."
  6. The screen will go black (this is normal), then display a green Android robot or a progress bar.
  7. Do not touch the brake pedal, open the door, or remove the USB. Wait for the progress bar to reach 100%. This takes 10 to 20 minutes.
  8. The system will reboot. Once the home screen returns, turn the car off completely, lock the doors, and wait 5 minutes for the modules to deep sleep.
  9. Restart the car. Confirm the new software version in About Car.