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M3:SR for 44k in Canada

Sadly, they deleted the article, then posted a retraction. The vehicle is still limited to 150 km of range.

I wonder if you could just not update the car when you take delivery. (Also disable the tracking or whatever that option is called).
Nope. Unless you pulled the LTE SIM card and never connect to WiFi -- there is ZERO chance that you would not get the update. It is a silent config provision and not an update.

And even if you were to not do such update -- most of us purchased before the V10 update and you can see how it can be bad for the battery pack if you didn't have this update as mentioned in this article https://skie.net/skynet/projects/tesla/view_post/23_Explaining+Changes+post-firmware+2019.16+Regarding+Range+Loss