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Are the updates cumulative?


Supporting Member
Supporting Member
Aug 1, 2015
Today I received 2018.14.2. What is possibly curious is that I had been on 2018.6.1, and never received 2018.10 or 2018.12. The release notes mention only the new location for the owner's manual link, and the additional controls for the phone app (hood and trunk).

So, I would like to assume that I have also received whatever was done by 2018.10 (updated MCU?) and 2018.12 (navigation?), but is that a valid assumption?
My car is too far from my house to connect to my home WiFi, so I doubt I will get the new maps, unless the service center installs them when the car goes in for service next week.



Dec 28, 2017
Yes the updates should be cumulative. The versioning required for what you describe would be insane.

Although even if you're on the latest version certain features may be disabled [but still in the software] until remotely enabled (eg: navigation delayed rollout). This is popular because if something goes wrong they can quickly switch back to old navigation without sending out mass updates.
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S Sig #255
Oct 21, 2012
So Cal
The patch file your vehicle receives is specific to your current build. It is a complete binary difference file to bring your firmware up to the current version.

There are no disabled features. Navigation maps are a separate download controlled by the mothership.
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