Cruise Control Sensor Calibration - Updated the whole car & locked ECU

Felipe3sgte

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Felipe
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San Diego, CA
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2020 Supra
Had front bumper damage from some object bouncing around on the highway.
I took it to Toyota's body shop, hoping they'd do a nice job.
In ECUTEK, I put the car in valet mode, put a OBD cover stating "do not re-flash, consult owner", and I specifically told them in writing not to re-flash the ECU.

As they got into the job, they found they needed to replace the cruise control radar sensor on RHS of bumper, which then needed calibration.
As you see in the subject, in the process of recalibration they completely updated the car's system, wiping away Bimmercoded changes, wiping away my ECUTEK tune, & locking the damn ECU.

The body shop claims that during sensor calibration, the system went into auto-update on its own... they never prompted a re-flash.
From anyone familiar with the dealership OBD system, is there validity to this?
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lmore377

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Texas
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2021 Toyota Supra 3.0
In this PDF it says this:
"Software inside the vehicle’s computers are reprogrammed using Toyota ISTA.
Reprogramming of ECUs via Toyota ISTA requires that the software version status of the ECUs on
the vehicle is unified, so reprogramming is always carried out for all ECUs."

I got that PDF my just googling Toyota ISTA and it was one of the search results.
 
 




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