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Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet

59 points • by p_stuart82 • yesterday at 8:41 PM • 20 comments • view on HN

Comments

thejazzman • today at 1:03 AM

PSA: If your wall connector loses wifi, it'll just throw your charging schedules out the window and turn on/off sporadically. This is especially noteworthy if you have Time of Use billing :| SET THE TIMER ON THE CAR DIRECTLY!

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m463 • yesterday at 11:08 PM

I hate the gen 3 wall connector.

It creates a wifi access point in your garage that you cannot turn off:

  TeslaWallConnector_<unique-id>
some people were able to downgrade their firmware to a version that didn't do that, but i guess this article shows telsa got rid of that ability.

I would love to be able to hack any firmware to disable that.

I also read that a connected tesla car can force an over-the-air firmware update maybe through the charging cable or wifi, but I haven't verified that.

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mystraline • yesterday at 11:41 PM

Repeat after me:

An owner voluntarily downgrading firmware to gain control of your hardware IS NOT A HACK.

And if an adversary is doing this, then they have already breached yoir physical security.

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486sx33 • yesterday at 10:39 PM

Why would I want to hack the bootloader for a wall charger? Asking for a friend

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