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Tesla just grants access to diagnostic software for independent repairers in EMEA markets.

That's the reason why it might be a good idea to follow the threads title and do a preventive replacement.

@rothman About one year ago I had a service.teslamotors.com subscription (registered for a European company) because I thought it would be possible to access Toolbox site but support told me there is no Toolbox for independent operators. Your screenshot was taken from a user with bodyshop...

no that's not possible - there is no connection between the service and the toolbox site.

The smartest way to get eMMC dump would be to put tegra in USB recovery (RCM/APX) mode and send a payload.

If you don't know your equipment you should check with voltage meter before. I would expect the adjusted voltage between V+ and V-, on most PSU's GND is earth and suitable to connect your antistatic mat/wristband - so you can forget GND and interconnect V-.

p1/p2: SquashFS

It's a fact that Tesla offers the worst possible service to independent repairers/operators in the whole automotive world. I don't know any other company that refuses the access to diagnostic software, tools and parts in that way.

ok, I would recommend to start with empty p3/p4 because they are not necessary to boot. Then go to your SC and let them restore your MCU.

@Banjo , @jtornqv The MCU's are from your own car?

If you mean Multi-COM: they only recover keys/certs in P3 - but they check if it's possible before you have to pay

I don't think that there would come an official 3rd party fix for the emmc issue. Why should Tesla offer this? There is definitely no reason for them and if the really want to offer cheaper solution they would sell you the whole tegra board.

Did you have a look at Swissbit EM-26 series - they are already configured for pSLC by factory?

For what purpose do you need the mmc-utils?

Allsocket SD doesn't also work for me with internal SD reader (tested three different ones) because of I/O errors. But I didn't try in-circuit reading - only with BGA socket.

# mmc extcsd read /dev/mmcblk0 ============================================= Extended CSD rev 1.0 (MMC 4.0) =============================================

I have the same situation trying to in-curcuit read a Hynix H26M42003GMRA: emmc is not recognized. Reader is an Allsocket SD-version. I'm not sure if it is a question of compatibility or just the result of an already defective component?

Toolbox is only availabe for approved bodyshops. It's never worth paying 5k for a cracked software with questionable functionality.

I think it would be helpful if someone could post the pinout for MCU0 and MCU1 boards for inline eMMC reading. Already damaged eMMC's don't like the unsoldering procedure.

Would be interesting to get additional informations on DU swap. Repair manual says you have to do firmware redeploy for front and small rear DU, but describing a immobilizer reset procedure (with toolbox) for large rear DU?

Toolbox site is only for approved bodyshops but in my opinion this is a discrimination of independent operators.