Tesla may have multiple versions of FSD hardware 4.0
@GreenTheOnly/Twitter
Since its introduction, Tesla's Hardware 4 (HW4), the company's most advanced full self-driving computer, has been shrouded in mystery. Renowned Tesla hacker @greentheonly, or Green, has uncovered more details about HW4, providing valuable insight into its technology.
2-SOC Version and Camera Layouts
Green's analysis of firmware samples led to the discovery of the shipping version of HW4, internally referred to as the 2-SOC (System on a Chip) version. This version supports two possible camera layouts: the current one or an expanded one with added surround-view cameras, such as a front bumper camera and two additional side cameras. These cameras can run at a resolution of 2880x1876 and reach up to 45 frames per second. The main and backup cameras have unique specifications, with the vendor yet to be determined.
The new Global Navigation Satellite System (GNSS) is reportedly based on the Teseo V platform, while the radar system connects via Ethernet and operates on an internal IP address of 192.168.90.110.
Initial HW4 Camera Connectors and New Cameras
Initially, Green revealed HW4 with 12 camera connectors, and new cameras were expected to be used in HW4 vehicles. However, the first vehicles with HW4, specifically the Model S and Model X, have the new hardware but do not include the new cameras. As previously reported in our Project Highland article, Tesla plans to add a new camera to the bumper and one more to each side of the vehicle.
Two HW4 Setups and the 3-SOC Version
Green's latest findings show two HW4 setups: one with additional cameras and one without. Additionally, Green's firmware analysis has uncovered the existence of a 3-SOC version in development. The camera layouts for this version remain the same, but the internal deserializing routing differs.
Increased heat output from the GPU in HW4 has possibily led to limitations in its capabilities. The 3-SOC version could potentially address this issue by offering better heat dissipation or paving the way for new hardware. However, the exact purpose and development of the 3-SOC version remain uncertain at this time.
Tesla Semi Truck-related Findings
In another intriguing development, Green's firmware analysis revealed information related to Tesla's Semi truck, with the Battery Management System (BMS) and all three subpacks accessible over an internal ethernet network.
These discoveries by @greentheonly provide a comprehensive understanding of the advanced technology behind Tesla's HW4. As the most advanced full self-driving computer on the market, its potential applications and capabilities are undoubtedly exciting for the automotive industry and consumers.
As Tesla continues to develop and refine its full self-driving technology, it is crucial to address questions about its safety, functionality, and integration with existing systems. The world eagerly awaits further developments in the cutting-edge HW4 and the autonomous driving experience it promises to deliver.
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Tesla maintains two primary software branches: the main feature branch and the FSD branch. In general, the FSD branch lags behind on new features pushed to the main branch but provides a more recent FSD version.
However, now Tesla is updating the main branch to a much more recent version of FSD.
Current FSD Build & Shadow Mode
Nowadays, the main branch always includes an older but stable build of FSD. It’s been on FSD V12.3.6 since July 2024. So, if you subscribe to FSD in North America, this is the FSD version you’ll receive until you get added to the FSD track.
Even if you don’t subscribe to or have purchased FSD, your vehicle has v12.3.6 on it. That includes vehicles in regions where FSD isn’t available for general use, such as Europe and China. In those cases, FSD runs in Shadow Mode, providing training data to Tesla if you’ve agreed to their data privacy policies. So Tesla is always analyzing what the vehicle would do compared to what the driver does. When there are contradictions, these are the clips and data Tesla will want to analyze.
FSD V12.5.4.2 on Main Branch
For the first time in five months, Tesla has now updated the baseline version of FSD in the main branch. The new version included with 2024.44 updates is FSD v12.5.4.2. This Tesla is updating the baseline FSD version to FSD V12.5.4.2
FSD 12.5 includes many features for a much smoother experience compared to FSD 12.3.6. Many users will appreciate that it gets rid of the steering wheel nag and instead relies on the cabin camera to provide real-time driver monitoring. This version also includes support for sunglasses with driver monitoring. It’ll be a big upgrade for anyone coming from FSD 12.3.6.
It's always a good thing when Tesla updates the baseline FSD version—that means that Tesla is confident that this new baseline is considerably safer and will continue to train the fleet against it.
What Update Am I Getting?
If you’re already on FSD V12.5.4.2, you’ll likely remain on that FSD build unless V13.3 manages to make its way to the public as Tesla originally planned, but that’s unlikely to happen before the Thanksgiving holiday. In all likelihood, you’ll be getting update 2024.44, which will give you some additional Tesla features while keeping you on the same FSD version.
For those who are already on 2024.44 - if you subscribe now, you’ll have V12.5.4.2 enabled on your vehicle.
If you have a Cybertruck, then you’ll receive update 2024.39.5 with FSD V12.5.5.3. They’re on a unique build for the moment, and this will likely be the case until Tesla acquires enough training data from the Cybertruck fleet.
The Cybertruck is having an eventful November. Just last week, we shared the news that Tesla isn’t offering their in-house wrap service for the Cybertruck anymore; the Foundation Series is now available in inventory in select US locations, Crossbars have arrived, and faster charging is around the corner. Now there’s even more to discuss about the stainless steel beast.
Projection Puddle Lights
Like the recently launched puddle lights for the Model 3 and Model Y, Tesla has introduced a set of add-on Projector Puddle Lights for the Cybertruck. These Cybertruck-specific ones go for $75 USD, or $105 CAD and are available in both the Canadian and US Tesla stores.
However, these don’t have the Tesla wordmark - instead, they feature the iconic Cybertruck symbol and, in our opinion, look even nicer. Here’s to hoping Tesla also introduces a set with the graffiti-style Cybertruck wordmark.
Powershare in Canada
While the Foundation Series Cybertruck has been getting delivered in Canada since November 7th, there was no news on Powershare being supported due to regulatory constraints. On the 20th, Foundation Series owners in Canada began to receive emails to get their Powershare installs started through Tesla’s official installer - Qmerit.
More to follow on pricing and the process as we receive our Canadian quote from Qmerit soon.
FSD in Canada
The Cybertruck Program Manager, Siddhant Awasthi, confirmed that with Powershare now becoming available, FSD for the Cybertruck in Canada will also become available soon. Canadian trucks shipped with a factory software build that didn’t include FSD, but did include TACC and stoplight/traffic control.
Early this morning Tesla began rolling out a new version of FSD 12.5.5.3 for the Cybertruck, which is update 2024.39.5. Will this be the version that rolls out in Canada?
Update: Yesterday, Tesla started rolling out FSD on the Cybertruck in Canada for the first time. The update being rolled out is update 2024.39.5, which not only features the latest FSD available on the Cybertruck, version 12.5.5.3, but it also includes all the features update 2024.38, which includes the huge Sentry Mode improvements that reduce power consumption by about 40%.
Following Integrated Flight Test 6 for SpaceX’s Starship, Elon Musk confirmed that uncrewed Starships are likely to begin making their way to Mars in about 2 years. You’re probably going to ask what’s going to be in those Starships - that’s what Brett Winston on X asked as well. Elon confirmed that Cybertrucks and Optimus robots will be among some of the first items landing on Mars.
That’s a ton of awesome news for Cybertruck, and there’s absolutely going to be more around the corner, especially as we await the big Tesla Holiday Update. While you wait, why not take a look at our Holiday Update Wishlists?
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