Did you mean carkey.tar file? I came across it in 2019.32.12.3 (see this post), so maybe they've been doing it longer?
Or is there some new method?
New method. They’re backing up the keys on the boot partition of the emmc in a squashfs image.
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Did you mean carkey.tar file? I came across it in 2019.32.12.3 (see this post), so maybe they've been doing it longer?
Or is there some new method?
Wouldn't they just regenerate them if needed?Interesting... this is an indication that they do not have your carkeys on their corporate servers. They're not making it easier for us, but for their own mechanics.
Interesting. I was not considering the FOB and it's encryption. I have been assuming all the keys were related to communication to the mothership.The fob is in the user's hands, and its private key -must- match the carkeys' public key.
As Tesla are now backing up carkeys it indicates to me that before, a service center would have to go through a faff of remarrying the fob to the car. Now the backup facilitates MCU replacement when the chip is bad. Thus they must not have the public/private pair of each car on their corporate servers, which would have made retrieval easy.
appleguru or ce2078, correct me if I'm wrong.
The fob is in the user's hands, and its private key -must- match the carkeys' public key.
As Tesla are now backing up carkeys it indicates to me that before, a service center would have to go through a faff of remarrying the fob to the car. Now the backup facilitates MCU replacement when the chip is bad. Thus they must not have the public/private pair of each car on their corporate servers, which would have made retrieval easy.
appleguru or ce2078, correct me if I'm wrong.
(aack, I wish they'd correct the embarrassing grammar issues in the OP. Sometimes I despair for the public school system)
I believe the carkeys being @appleguru is talking about are private key and certificate Tesla is using to authenticate the car, nothing to do with the actual car key fobs.The fob is in the user's hands, and its private key -must- match the carkeys' public key.
@rooter, I tried to log onto https://unofficial-tesla-tech.com/ which is in your TMC signature and I cannot reach your webpage.'Bout time they did this. My backups script has backed up critical files to the IC and home server for almost a year.
Haven't quite finished the part of the article yet on backing up to home server.
Interesting... this is an indication that they do not have your carkeys on their corporate servers. They're not making it easier for us, but for their own mechanics.
@rooter, I tried to log onto https://unofficial-tesla-tech.com/ which is in your TMC signature and I cannot reach your webpage.
What a shame, I wish I can copy/pasted all of the pages before they were removed. :-(Unfortunately the web archive only got the front page of UnofficialTesla Tech.
For those that have had MCU failures, this may be of interest. There's at least *some* possibility that the cars could be recalled for free (or reimbursed) replacements of the original eMMC chips. If you've replaced an MCU, you might be well-advised to add your complaints to the NHTSA database as they're only reporting 11 (!) complaints.
https://www.cnbc.com/2020/06/24/us-opens-probe-into-tesla-model-s-after-touchscreen-failure-reports.html
It is a safety issue, so I would encourage everyone that has had problems to file a complaint. I think this is the correct place to do so: File a Vehicle Safety Complaint | Safercar.gov | NHTSA
It echoes what was noted above, but does not indicate a recall.
You forgot about no HVAC and defrosters, no way to defog/defrost windshield or windows.Some cars have reported loss of turn signals usage once MCU has failed also. One also looses the ability to turn on head lights. This can be an issue if your driving in an area where headlights are required even in daytime as the automatic headlights will not come on.