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.