The current version of Nitrokey 3 Firmware is 1.9.1 (as of 30/09/2026). patchletter checks the official source daily and emails you new releases.
Nitrokey 3 Firmware at a glance
The Nitrokey 3 is a hardware security key with USB-A, USB-C and NFC. It acts as a FIDO2 and WebAuthn authenticator for passwordless sign-in and two-factor login, provides one-time passwords, and works as an OpenPGP smart card and PIV token for S/MIME, SSH login and disk encryption. Administrators deploy it wherever private key material must never leave the device.
The device firmware is open source and published in the vendor repository: stable builds plus occasional pre-releases, each with a changelog, signed update files and migration notes. It is applied using the vendor's command-line tool or desktop application.
Before a rollout, read the release notes: downgrades are not supported, newer update file formats require an up-to-date flashing tool, and individual builds change behaviour of OpenPGP, PIV or the number of resident keys that can be stored. Stored credentials and PINs normally survive an update. Even so, update a test device first and keep a second registered key as a fallback for the affected accounts before the rest of the fleet follows.
Version history & changelog · as detected by patchletter
| Version | Channel | Date | Notes |
|---|---|---|---|
| 1.9.1 | STABLE | 30/09/2026 | Release notes → |
| 1.8.3 | STABLE | 14/10/2025 | Release notes → |
Frequently asked questions
- What is the latest version of Nitrokey 3 Firmware?
- Nitrokey 3 Firmware 1.9.1, released 30/09/2026. patchletter checks the vendor's official source daily for new releases.
- Where can I find the Nitrokey 3 Firmware release notes?
- The version history above links to the vendor's official release notes where the vendor publishes them. patchletter deliberately stores no vendor full texts.
- How do I get notified about new Nitrokey 3 Firmware updates?
- Tick Nitrokey 3 Firmware off in the catalogue and leave your address. From then on new versions go out by email — one at a time, or bundled in the daily or weekly digest.
An email as soon as a new Nitrokey 3 Firmware version ships
We reconcile the vendor source daily. When a new version appears, it lands in your inbox right away or bundled as a digest. The update email is free and ends with one click. Alerts about vulnerabilities and end of support are part of patchletter Pro.
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