FAQ: Does this unlock FSD on 2026.14.x / .20 / .26.x? (read first)

[hypery11]

This is the canonical answer to the question that comes up most often here: "Does this unlock FSD on 2026.14.x / 2026.20 / 2026.26.x?" Please read this before opening a new thread — most of the time it answers your question, and if it doesn't, link back to it so we can pick up from the right baseline.

Short answer

What you want	pre-14.x firmware	2026.14.x and newer (incl. .20 / .26.x)
Turn FSD on over CAN	worked	No. Blocked by an in-car preflight + an off-CAN region/entitlement lock
Nag killer	works	works (needs the right bus — Party CAN 2/3)
TLSSC Restore	works	works
Summon EU distance unlock	works	works
Listen-only captures	works	works

Why FSD activation can't be done over CAN on 14.x+

This is not a "we haven't cracked it yet" — it's been investigated at the frame level (full write-up and raw evidence in #163, tracker in #122). Two independent walls:

1. A content-specific preflight (tamper check). On 14.x+ the car watches the Vehicle-CAN copy of 0x3FD and, the moment it sees the FSD-enable bits injected, it aborts within ~0.05–0.4 s — silently. Injecting on Party CAN alone does nothing (the checker reads the Vehicle-CAN copy). An exact-duplicate frame is tolerated; the content is what trips it.
2. The region/entitlement lock lives off the bus. Even on a car whose tier already reads SELF_DRIVING, activation still aborts. The lock is enforced in the gateway/VIN/backend entitlement, not in a CAN bit — so CAN injection (and even a bus MITM) can't flip it.

Practical consequences:

• Buying an FSD subscription because you expect this tool to enable it will not work on current firmware. Don't do that.
• A US car with the FSD package imported to the EU is an entitlement/region question at the backend — this tool does not convert it to EU-FSD-enabled.
• Going offline / GPS spoofing does not help — the entitlement is server-synced state, not a live GPS gate you can starve.

What does still work, and how to help

• Nag killer — tap Party CAN (pins 2/3); it needs 0x370 on the bus you tap. Wrong bus is the What about HW1 or HW2 with FSD? #1 reason it "doesn't work."
• Summon EU distance unlock, TLSSC Restore, traffic-light / stop-sign visualization, listen-only captures all work on current firmware.
• The most useful thing you can contribute is a listen-only capture from your exact car + firmware (put the tool in Listen-Only, drive normally, export the log). Full-rate single-ID captures via the ?ids= filter are especially valuable. Post them in the relevant issue or in [tracker] 2026.14.x / 2026.20 — nag killer + FSD activation: status & how to help #122.

Safety

FSD-enable injection can trigger signal/intent on a moving, engaged car before the preflight cuts it. Treat any FSD-activation experiment as bench / closed-track only, hands ready.

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If your situation genuinely isn't covered here (unusual hardware generation, a frame layout that reads differently, a firmware not in the table), open a thread and link this post — that keeps the discussion starting from the known baseline instead of re-deriving it.

[Tesla234987234sdf]

If i just enable eu smart summon unlock it does not work. Does this need any extra activation? I just enabled eu smart summon unlock switch and enable the injection.

[hypery11]

Consolidated the answer over in #175 so it's all in one place — short version: this is most likely the bus. On 2026.14.x+/.26.x the car reads the Vehicle-CAN copy of 0x3FD, so a Party-only injection is ignored (that's also why your TLSSC on 0x331 works but Summon on 0x3FD doesn't). Details + what I need from you (your tap/hardware) are in #175.