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Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet

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Re: Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet

#61

Post by gwbas1c »

m463 wrote: post #5
culi wrote: post #3

Earlier quoted context omitted.

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.

> I thought tesla even made a j1772 native wall connector.

At least a few years ago, they would openly recommend it for non-Teslas.

I thought NACS brought some changes to Level 1 and 2 that aren't backwards compatible with J1772? I know there's an oddball voltage in there so you can put a NACS charger on a lamppost where J1772 would require a transformer; but I didn't think there were protocol issues too.

Re: Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet

#62

Post by alt227 »

oneshtein wrote: post #47
_flux wrote: post #43

Earlier quoted context omitted.

It clearly seems people have different meanings to the word, then. For example, if I am able to gain root access to a WiFi access point I own, even though the vendor has tried to prevent it, then yes, I would call it a hack. To me, it doesn't matter why or who is doing the steps. In fact, I believe I have never before heard someone combine the meaning of the word to be related to the ownership of the device being hac…

> For example, if I am able to gain root access to a WiFi access point I own, even though the vendor has tried to prevent it, then yes, I would call it a hack. Yep. The owner of the device can sue you.

Why would they sue themselves?

Re: Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet

#63

Post by alt227 »

braiamp wrote: post #54
spacebanana7 wrote: post #50

One thing I'm really scared of is EV charger software being modified by users, hackers or bugs to pull max power at times that don't suit the grid. In the UK, for example 10 million EVs all pulling 7kw would overwhelm the roughly 70GW potential of the grid. Even a million EVs charging at an inconvenient time could add a 7GW draw which is enough cause a problem.

It will first damage the batteries very fast, second, most users don't want to mess with that, they want to plug and play. So, on both counts your fears are misplaced.

It sounds like a genuine attack vector to me. If someone hacked say teslas firmware supply chain and made all chargers pull max power at the same time, it could be a national infrastructure crippling attack.

Re: Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet

#64

Post by f001 »

rblatz wrote: post #26
thejazzman wrote: post #21

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…

Does the tesla wall connector offer Ethernet? Honestly I feel like most devices that are not expected to move around should at least offer it as an option (exceptions being for things where it’s not feasible like smart bulbs, smart locks, etc). If anything it’ll remove congestion for things that can’t realistically be wired.

Re: Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet

#65

Post by jp191919 »

m463 wrote: post #4

I hate the gen 3 wall connector. It creates a wifi access point in your garage that you cannot turn off: TeslaWallConnector_ 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…

I put mine on an isolated IOT network.

Re: Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet

#66

Post by jp191919 »

cryptoegorophy wrote: post #44

Why use Tesla wall connector in a first place and not just the standard nema/dryer outlet with the Tesla cord/charger? It seems like people are overpaying for nothing.

It costed less for me to install a tesla wall connector over a NEMA receptacle, as the NEMA 14-30 and 14-50 require a neutral wire and a GFCI breaker.

Re: Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet

#67

Post by bluGill »

grosswait wrote: post #57
thechao wrote: post #56

Earlier quoted context omitted.

I do as well with a NEMA?

I don’t think the mobile charger allows more than 32A continuous over NEMA, even on a 50A receptacle

There are a lot of different mobile chargers, if you don't like the specs on the Tesla charger buy a different one. Though do beware that cheap 50A receptacles cannot handle 50 amps continuous. They are for stoves (max 40A), or welders (low duty cycle since you spend more time in setup then welding - assembly lines use better receptacles)

Re: Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet

#68

Post by bluGill »

gwbas1c wrote: post #61
m463 wrote: post #5

Earlier quoted context omitted.

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.

> I thought tesla even made a j1772 native wall connector. At least a few years ago, they would openly recommend it for non-Teslas. I thought NACS brought some changes to Level 1 and 2 that aren't backwards compatible with J1772? I know there's an oddball voltage in there so you can put a NACS charger on a lamppost where J1772 would require a transformer; but I didn't think there were protocol issues too.

J1772 is 120V or 208-240V. Those are by far the most common voltages in the US. (208 is what you get when you take a US 3 phase system and connect to two phases - this is somewhat common and most people don't know or care that their apartment is wired like that). I have seen other voltages at industrial sites, but I wouldn't expect that in a lamppost.

Re: Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet

#69

Post by elteto »

m463 wrote: post #18
ralph84 wrote: post #17

Earlier quoted context omitted.

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)

Can I ask why don't you want a Tesla charger talking to Tesla? Seems a bit odd if you already own a Tesla vehicle that is just piping the data to Tesla all the time.
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