Update, August 19, 2026: The Holiday branch was 2025.44.25.x. A week later Tesla started 2025.45.5 / FSD (Supervised) v14.2.2 — Tesery’s v14.2.2 rollout note. The Dec. 13 “new FSD in the Holiday Update” was a 14.2.1.25 point build for Hardware 4 early-access cars, not unsupervised Robotaxi and not a new owner SKU name.
On December 12–13, 2025 Tesla’s 2025 Holiday Update reached more Hardware 4 cars as software 2025.44.25.5. The same branch carried Full Self-Driving (Supervised) v14.2.1.25 for some early-access owners — a small step on top of v14.2.1, not a new product line. Tesla had already posted the Holiday package on its own channels (the official Tesla Instagram Holiday post went up December 10). Tesla Oracle logged the official notes for 2025.44.25.1 through .5. The FSD bit is a firmware pairing, not a press conference.
Key facts
- Vehicle software: Holiday Update 2025.44.25.1 → .5, rolling through mid-December 2025.
- FSD build seen with it: v14.2.1.25 on some HW4 early-access cars the night of Dec. 12–13.
- What the Holiday notes were about: cabin features (Grok nav, Supercharger visuals, dashcam FSD status, and the usual holiday extras) — see Tesla Oracle’s notes list. FSD versions travel on their own track.
- What this is not: Unsupervised Robotaxi on owner cars, or a “surprise new FSD generation.”
Holiday firmware vs FSD version
Tesla ships a vehicle firmware number and an FSD number. Owners often see both land the same night. That is a combined OTA, not Tesla renaming FSD. Tesery’s later v14.2.2 tester notes are the next FSD increment. Treat 14.2.1.25 as the Holiday-week patch.
FAQ
Did every car get FSD 14.2.1.25 with Holiday?
No. The Holiday UI package and the FSD point build did not go to every VIN the same night. HW4 early access saw the FSD number first.
Is this unsupervised?
No. The label stayed Full Self-Driving (Supervised).
Was this the same as 2025.45.5?
No. 2025.45.5 / v14.2.2 started about December 22.
For owners: read the on-screen release notes on your car. A holiday animation does not change the requirement to watch the road.
Featured photo: 2025 Tesla Model Y (file photo of the Hardware 4 body that took the Holiday OTA, not a screenshot of 2025.44.25.5). Image via Wikimedia Commons.
Related: FSD v14.2.2 / 2025.45.5 rollout · v14.2.2 owner-tester reports
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