Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet
synacktiv.com64 points by p_stuart82 6 hours ago
64 points by p_stuart82 6 hours ago
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!
I spent an hour yesterday getting the wall connector back on my wifi. Apparently last October when I added wifi 7 access points my network started working in WPA2/WPA3 mode and the wall connector wasn’t compatible with that. Ended up having to create a second SSID with WPA2 only support to get it back online.
Supposedly the newest update fixes that, but I haven’t taken the time to test that out.
But WiFi is shocking my fragile on these wall connectors, I’ve had a lot of trouble keeping it connected to my home network over the years.
>SET THE TIMER ON THE CAR DIRECTLY!
This would open up a lot of issues to get away with not paying and charging for free.
Your comment makes no sense. The tesla wall connector is a home charging port you install in your garage.
I hate the gen 3 wall connector.
It creates a wifi access point in your garage that you cannot turn off:
TeslaWallConnector_<unique-id>
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.
The SSID stops broadcasting after the unit is commissioned, unless you're using power sharing between multiple units. In that case the SSID is used for the units to communicate.
by commissioned you mean "connect it to your home wifi and let it talk to tesla"? (i won't do that)
because it hasn't gone away after configuring the setup stuff (amps, etc)
Thank you. This information is not listed anywhere and I am currently getting quotes for solar panel build.
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.
It's a car the charging port is a viable physical perimeter, letting people inject code at the pump is a risk of design, not user error.
Eh, that’s a bad generalization. defense in depth is a thing and there are many cases where you’d want to protect against attackers with physical access
Why would I want to hack the bootloader for a wall charger? Asking for a friend
You can bypass vehicle restrictions. You could potentially then use it for J1772-compatible EVs (like a Chevy Bolt or Nissan Leaf)
Or just for the spirit of actually owning the shit you pay for.
I don't think there are any restrictions. I think j1772 might just work with an adapter (adapt from the nacs plug to the j1772 plug)
I thought tesla even made a j1772 native wall connector.
There are some restrictions.
I had the foolish idea of installing a Tesla charger at home to charge my Bolt. I’ve been unable to ever use it.
The wall charger works fine with Teslas. My car and adapter charge fine at Tesla superchargers.
But the home Tesla charger refuses to charge my Bolt. (Yes I disabled vehicle restrictions and tried all sorts of combinations of settings for weeks before giving up. Tesla support was useless of course)
Restriction or bug, same difference.
Can confirm. I've used an adapter to charge 2 different non-Tesla cars off my wall connector.
What vehicle restrictions? This is for the Tesla home charger, not Superchargers.
Older models are locked to Tesla vehicles. Tesla has regional restrictions in many parts of the world.
You also never know when there could be another update and your region becomes one of those that has these restrictions.