Does Tesla Upgrade MCU / AP / HW on used cars before putting them up for sale?

I found a Model X on the Tesla site (used) after window shopping for a few weeks. I’ve been reading Tesla experiences while I wait for this car to get here. After looking into various regrets and issues, I’m a little anxious about finding the “right car”. I will admit being a little impulsive (2017 Model X P100DL with FSD) since there is so much to consider. Anyway, the deposit is paid and this is being delivered to my local dealer in the next week or two.

So my big question: Is there any chance that the MCU or other hardware will be upgraded? My hope is that they did this to make FSD work better or maybe avoid the MCU1 failures in the field.

submitted by /u/mynameisnimrod
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