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The community-driven platform tracking every Tesla Full Self-Driving software release — versions, release notes, firmware, and real-world demo videos.

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© 2026 FSD Update. All rights reserved.

Tracking Tesla FSD updates since 2021.

FSD News

What changed in FSD 14.3.7

August 13, 2026

Official 14.3.7 notes match 14.3.6. The useful change is the Aug 1–9 rollout, plus 14.1 Lite for HW3 on firmware 2026.21.6.

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Official notes did not change

Tesla started rolling FSD (Supervised) 14.3.7 on August 1, 2026 in firmware 2026.21.5. NotATeslaApp’s notes for that build say the on-screen changelog is the same as 14.3.6. We are not inventing a new feature list. The carried-forward notes still describe the v14.3 stack: a reinforced-learning training stage, a vision-encoder upgrade, the MLIR compiler rewrite Tesla says cut reaction time by about 20%, plus parking, emergency-vehicle, traffic-light, and driver-monitoring items that landed earlier in 14.3.

That is why a 14.3.7 card can look identical to 14.3.6. The version number moved. The published notes did not.

What owners said changed

Public owner reports, including TeslaNorth and Tesla Oracle writeups in early August, said 14.3.6 had brake stabbing and stuttering. Those same reports said 14.3.7 felt cleaner on the same routes. Treat that as community feedback, not an official Tesla bullet. Tesla did not add a “fixed phantom braking” line to the 14.3.7 notes.

Firmware 2026.21.6, dated August 9, 2026, is a unified package. Hardware 4 vehicles stay on 14.3.7. Hardware 3 Model 3 and Model Y get FSD 14.1 Lite, which is a separate branch with its own notes. We added both to the tracker from those public notes.

It is still supervised

FSD Supervised can start from park, change lanes, follow navigation, and park at a destination. It does not make the car autonomous. The driver has to stay attentive and be ready to take over. FSD Update is independent and not affiliated with Tesla, Inc.

If you are comparing versions on the road, a USB drive for Dashcam and Sentry is the usual owner setup. We link a 128GB Tesla Dashcam / Sentry USB. For non-Tesla Level 2 stations, use a J1772-to-Tesla adapter (not a Tesla-to-J1772 dongle).

Related: Tracker fsdupdate.com. Also on FSD News: FSD 14.1 Lite for HW3, explained, HW3 vs HW4 FSD in 2026, What changed in FSD 14.3, What landed in FSD 14.3.2 through 14.3.4. The 14.3.7 version card is FSD 14.3.7 (recap lives there).

Public notes for 2026.21.6: NotATeslaApp 2026.21.6 release notes

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