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I did this to my 2017 Yaris iA, following those instructions you showed where you press the three buttons on your console and type in some numbers to start the update.

I went from 55.00.754 NA N to '70.000.100 NA A Failsafe' to '70.000.100 NA A' and finally to 70.000.367.

This changes the branding to Mazda, and the colors to red, but almost everything remains the same, I'm currently running the latest version without any problems. This weekend I hope to install the new USB hub and wiring so I can use Android Auto.
 

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