Trézór Bridge | Introducing the New Trézór App

A colourful, practical 1500-word guide explaining the transition from standalone Bridge to the new Trézór App: why it matters, how to migrate, developer impacts, security improvements, and everyday user workflows.

Executive summary

The Trézór App replaces the legacy Bridge service with a unified, modern application that centralizes device communication, firmware verification, and UX improvements. The goals are simple: reduce complexity, improve security, and provide a single point of maintenance for both users and integrators.

Why consolidate Bridge into the Trézór App?

  • Smaller attack surface: consolidating services reduces background processes and system services that can be targeted by attackers.
  • Simpler user experience: one app to download and update, fewer prompts and clearer onboarding.
  • Faster updates: new features and security patches ship in a single release cycle.
  • Improved cross-platform parity: consistent behavior on macOS, Windows and Linux.

What changes for end users?

  • One installer: download the Trézór App instead of separate Bridge binaries.
  • Streamlined device connection: auto-detection, clearer prompts, and fewer permission dialogs.
  • Built-in firmware verification: the App performs cryptographic checks and displays verification details.
  • Metadata & sync: enhanced handling of encrypted labels and cloud sync options with clearer controls.

If you're using multiple machines, enable the App's encrypted cloud sync to keep labels and preferences consistent — the encrypted data remains unreadable without your device.

Migration path — step-by-step

  1. Uninstall the standalone Bridge service (if previously installed) to avoid conflicts.
  2. Download and install the latest Trézór App from the official site.
  3. Open the App and connect your hardware wallet; follow on-screen prompts to verify firmware.
  4. If you used Bridge for metadata sync, import your encrypted metadata file into the App or re-enable cloud sync.
  5. Test one transaction flow (low-value) to confirm signing and UIs behave as expected.

Note: Organisations with automated deployment should stage the App in a test environment before rolling out widely.

Security improvements under the hood

  • Integrated firmware checks: the App verifies firmware signatures and presents verification hashes to users.
  • Fewer privileged services: removing an always-on Bridge daemon reduces background privileges required by the system.
  • Stronger user prompts: clearer transaction details and mandatory confirmation steps directly on the device screen.
  • Encrypted metadata lifecycle: the App improves metadata key rotation and secure re-encryption workflows.

Developer notes — what integrators need to do

Developers that previously integrated with Bridge should take these steps:

  • Update TrezorConnect initialization to point to the App-managed endpoints or use the App's provided SDK. Example initialization may change from a Bridge URL to a local App origin.
  • Verify cross-origin and permission flows in your integration; some event names and connection sequences may vary slightly.
  • Test thoroughly on macOS, Windows and Linux to ensure there are no platform-specific quirks.
// Example: initialize TrezorConnect to use the App
TrezorConnect.init({
  manifest:{email:'dev@yourapp.com',appUrl:'https://yourapp.com'},
  connectSrc: 'https://app.trezor.io/bridge'
});

Common migration pitfalls and how to avoid them

  • Not uninstalling Bridge: keep only the App installed to avoid socket/port conflicts.
  • Metadata mismatch: ensure you import the correct encrypted metadata blob and test decryption on the device.
  • Automated scripts: update CI/CD and deployment scripts to reference the App binary and not Bridge packages.

Everyday user workflows — examples

  • Sending BTC: compose the transaction in your wallet UI, review details in the App, then confirm on-device.
  • Label syncing: create address labels on your primary machine and let the App push encrypted metadata to your cloud provider for other devices to pick up.
  • Firmware update: when the App detects a firmware update, it shows verified release notes and requires device confirmation to proceed.

Privacy considerations

The App minimizes telemetry and provides opt-in controls. Encrypted metadata stored in the cloud cannot be decrypted without the device, but consider the following:

  • Prefer local metadata storage if you cannot trust the cloud account security.
  • Rotate cloud credentials if you suspect compromise and re-encrypt metadata with a fresh key.
  • Use passphrases for added compartmentalization; remember passphrases are unrecoverable if lost.

Support and troubleshooting

  • If the App doesn't detect your device: ensure USB drivers are installed and no other wallet software is holding the device open.
  • Connection timeouts: try restarting the App and reconnecting the device; check for OS-level permission dialogs.
  • Metadata errors: export the encrypted file from your previous setup and import it into the App using the 'Import metadata' flow.

Roadmap and future features

Expect continual improvements: better offline signing workflows, enhanced audit logs, plugin support for advanced coin types, and improved developer SDKs to make integrating the App straightforward.

Final thoughts

The Trézór App is a natural evolution from Bridge: it simplifies setup, tightens security, and streamlines developer integration. Whether you're an end-user managing a few addresses or an integrator with production-grade services, the App aims to make hardware-wallet interactions safer and more predictable.