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Release signing and SBOM

Every Foxborne release is a signed bundle with an SPDX bill of materials. Foxborne checks the signature against the Foxborne release key before anything installs, and nothing installs if it does not match.

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An update reaches a Foxborne deployment only as a file your administrator brings in. Each release is a signed .fxb bundle with a software bill of materials, and Foxborne checks both before it installs anything. Nothing is downloaded, so the same check works in an air-gapped enclave.

What a release carries#

PartExampleWhat Foxborne does with it
Bundlefoxborne-1.4.3.fxb, 412 MBReads it
SignatureFoxborne release key 7C1E 4B90 3A2F 9A42Checks it before anything installs
Bill of materialsSPDX 2.3, 418 componentsChecks it and stores it with the release
Database migrationTwo additive migrations, no data rewrittenChecks it before anything installs

The examples come from the console's sample bundle. Licenses are checked offline too, with no call home.

The bill of materials#

Each release carries an SPDX 2.3 bill of materials. The Updates panel reports the one for the running release, such as SPDX 2.3, 412 components, stored with the release.

Before an install, the check line reports the new release's component count and whether any component has a known critical vulnerability. In the example, the sample bundle lists 418 components and no known critical vulnerabilities.

Before you start#

  • You need the Admin role. Only admins hold Manage hosting, keys and access.
  • The .fxb bundle is inside your network, brought in under your own transfer process. For an air-gapped install, see Air-gapped installation and updates.

Check a bundle and install it#

  1. Record the release key

    Go to Hosting. The Updates panel shows what runs now and who signed it.

    Installed
    1.4.2, 12 Sep 2026
    Signed by
    Foxborne release key 7C1E 4B90 3A2F 9A42
    Bill of materials
    SPDX 2.3, 412 components, stored with the release

    Record the key's fingerprint, 7C1E 4B90 3A2F 9A42, in your change record.

  2. Open Install an update

    Select Install an update in the page header, or Install on the Updates panel.

    The Install an update dialog notes Updates are signed bundles. Nothing is downloaded; your administrator brings the file in. It shows the bundle as a file card with its name.

  3. Read the four checks

    Foxborne runs four checks in turn, and the install button stays disabled until they finish.

    Install an updateExample checks for the sample bundle foxborne-1.4.3.fxbText
    Read bundle. foxborne-1.4.3.fxb, 412 MB.
    Check signature. Signed by the Foxborne release key 7C1E 4B90 3A2F 9A42.
    Check the bill of materials. SPDX 2.3, 418 components, no known critical vulnerabilities.
    Check the database migration. Two additive migrations, no data rewritten.

    Compare the fingerprint on the signature line with the one you recorded.

  4. Install

    The dialog notes Downtime: none. Workers restart one at a time. Select the install button, which names the version, such as Install 1.4.3.

    The console confirms when the update will run, such as 1.4.3 will install in the maintenance window tonight at 02:00 UTC. The audit log records Scheduled update on 1.4.3, with the detail Signature and SBOM verified.

Check the result#

  • The audit log records Installed update once the release is in, such as on 1.4.2 with Signature verified, SBOM stored.
  • The Updates panel shows the new version under Installed and adds it to the history, with who installed it and when.
  • Version in the Hosting summary carries the chip Signature verified, and the status bar names the running version.

In the example dataset, the Updates history reads:

VersionChangeInstalled
1.4.2Parser fixes for PX4 v1.16 rover topics12 Sep 2026
1.4.1Receive log latency estimates from SYSTEM_TIME1 Sep 2026
1.4.0Manual clock alignment from matching events15 Aug 2026

Troubleshoot#

The install button stays disabled. The checks have not finished. The button turns on once the fourth check completes.

The signature does not match. Nothing installs. Set the bundle aside and bring in a fresh copy through your transfer process.

The fingerprint differs from your record. Stop before installing, and raise it through your own security process.

The collector package#

The collector's Debian package is signed with the same Foxborne release key. Vehicles install it from your internal package mirror, as Install and enroll the collector shows.

Next#