To Replace the firmware update in your Mazda correctly, you must first reveal the whole version numbers on the screen below.
1. Push the start button (with the radio turned on) to activate the ignition or ACC.
2. Keep pushing the volume mute button simultaneously.
The "Diagnostic Test" screen will display when you simultaneously push the Music and Favourite buttons for three to five seconds.
3. Use the Commander Knob to scroll up or down the list on the screen, as shown by the orange highlighted items.
4. Press the Commander Knob once to bring up the screen, and then choose the orange "Service Information" option.
5. From the screen, choose "Connected Device Information" (orange).
Next, find the orange "CMU" option and click on it.
7. The screen labelled "Device Version Information CMU" follows.
View the ECU software number '7000C0A-NA11_10008' as an example.
What we need to know is the whole string of numbers and letters beginning with 70xxCxx-xxxx_xxxxx.
To exit the test, record your numbers and then click the return arrow.
Capture a screenshot of your screen and send me a private message while we're talking.