Mazda All Models Firmware Update v31.00.100A NA (USA/Canada/Mexico, 2012-2021)

This firmware version/format (.up) will not be installed on new Mazdas (2022 and above). You must use the correct region for your Mazda, as detailed below.

Region NORTH AMERICA – USA, Canada, Mexico, Puerto Rico.

APPLICABLE MODEL(S):
2012-2019 Mazda3
2012-2021 Mazda2*
2012-2021 Mazda6
2014-2021 CX-3
2012-2021 CX-5**
2015-2021 CX-9*
2014-2024 MX-5*

* Not for Mazda Connect System 2 with 10.25 inches (26 cm) display. Only for Mazda Connect 1 gen. If you don’t know what is Mazda connect and Mazda connect 2 – this firmware is only for cars with a main menu on the screen that looks exactly like the one in the photo above.

**NOT For first production CX-5 or Mazda 6 with TomTom Navigation**

• READ CAREFULLY BEFORE INSTALLING (INSTALLATION INSTRUCTIONS ARE ATTACHED TO UPDATE FILE):
• IF YOUR MAZDA has old FIRMWARE VERSION ON or BELOW 30.00.000, such as 23.00.000 or 25.00.150 or 28.00.300 or 29.00.100C THEN YOU MUST UPDATE with Version Number 31.00.100A FIRST. THIS IS A TWO FILE INSTALLATION FOR YOUR REGION or COUNTRY: First install cmu140_NA_31.00.100A_failsafe.up, Then Install cmu140_NA_31.00.100A_reinstall.up                                                                                                                          ————————————————————————————————————————————–
• Installation Requirements
• USB flash drive (FAT32 formatted) – minimum 4 GB, maximum 16 GB (do not use higher volume flash drive)
• Access to the Mazda Connect infotainment system
• Good vehicle battery or engine running during installation
• Approximately 15–30 minutes

• 📥 How to Check Your Current Firmware Version

1. Turn on your vehicle (ACC or ON mode).
2. Press and hold the following three buttons at the same time:
   • Music Note + Favorites + Mute (Volume)
3. The Diagnostic Menu will appear.
4. Navigate to:
   Version Information > Connected Device > CMU
5. Your current software number will be displayed. If it’s lower than 11048, you can safely update.

• 🛠️ Installation Instructions
• ⚠️ Please follow all steps carefully. Do not power off the vehicle or remove the USB drive during the process.
• IMPORTANT: This update covers original Mazda systems only. We are not liable for malfunctions in aftermarket accessories (Navigation SD cards, cameras, etc.) installed by local importers. Please consult your local installer for issues related to non-genuine components. For a smooth installation, we recommend disconnecting all devices from USB ports and removing the Navigation SD card during the update process. you can insert it back ONLY after update procedure is complete
• A Step-by-step Guide is included with the update files.