Overview

Trézor Bridge is a small background service that enables secure USB communication between your Trézor hardware wallet and desktop or browser-based cryptocurrency applications. It runs locally on your computer, exposes a loopback API for apps to talk to, and is intentionally limited to device communication — it does not upload keys or recovery material.

1. Download the correct installer

Choose the installer that matches your operating system. Verify file checksums and signatures after download.

2. Install & grant permissions

Run the installer and follow prompts. On macOS, you may need to allow the Bridge system extension in System Settings → Privacy & Security. On Linux, make the AppImage executable (chmod +x TrezorBridge-*.AppImage) or install the .deb with your package manager.

3. Start Bridge & connect your device

Bridge typically starts automatically after installation. Plug in your Trézor device (use the official USB cable). Open your desktop wallet or web app — it should detect the device and prompt you to confirm on the device screen.

4. Verify authenticity

Always download Bridge from the verified Trézor domain and verify checksums and signatures with the published public key. When using web apps, ensure the site is the official domain (HTTPS + valid certificate) and review any transaction details shown on your hardware device before approving.

Security notes

  • Bridge only facilitates local device communication. It does not access or send your recovery seed.
  • Firmware updates and critical operations must always be confirmed on-device.
  • Limit third-party browser extensions and only connect to trusted dApps.

Checksums & signatures

After downloading an installer, verify its checksum (SHA256) against the published value on the official release page. Example:

shasum -a 256 TrezorBridge--x86_64.AppImage

Use PGP/GPG to verify signed release manifests if a signature file is provided.

Troubleshooting & support

If you run into issues, collect logs, note your OS and Bridge version, and contact official support. Do not share your recovery seed or PIN with anyone — support will never ask for them.