Install & set up Bridge
Download the official Bridge package from the official website. Choose the installer matching your operating system. During installation, your system may request administrative privileges — this is normal as Bridge installs a small system service. After installation, Bridge usually runs automatically in the background. Some browsers or OS configurations may require a browser restart for Bridge to be recognized.
Step-by-step
- Download the latest Bridge installer from the official source.
- Install and grant any required permissions (admin rights on Windows, system extension approval on macOS).
- Restart your browser or desktop application if prompted.
- Plug in your Trezor device; the Suite or supported web app should detect it via Bridge.
- Follow on-device prompts to confirm actions; never accept unexpected firmware updates or prompts.
Troubleshooting common issues
Make sure Bridge is running (check system tray / background services). Restart your browser and reconnect the device. Reinstall Bridge if needed.
Recent macOS versions require user approval for kernel extensions or system services. Open System Settings → Security & Privacy and allow the necessary extension or service, then restart the machine if requested.
Modern browsers are moving to WebHID/WebUSB APIs which may require specific permissions or flags. If a web app supports native WebHID/WebUSB, you may not need Bridge. Always prefer official guidance from the app you are using.
Try a different USB cable or port. Use the cable that came with the device. Avoid USB hubs for the initial setup. If problems continue, power-cycle the device and computer.
Security & privacy best practices
Bridge is an enabling layer — but your security depends on safe device handling and vigilance. Only download Bridge from official sources. Bridge does not access or store your recovery seed or private keys. Always verify firmware updates and transaction details directly on your device’s screen. Consider using a dedicated machine for high-value transfers and connect to your own node if privacy is a priority.
When Bridge is or isn’t needed
On many modern systems and browsers, native WebHID or WebUSB support may allow direct connections without Bridge. Bridge remains useful for older operating systems, legacy flows, or desktop apps that expect a consistent local transport layer. If a web app offers a choice, follow the official instructions for that app and select the recommended transport method.
Advanced: Developer notes
Developers integrating Trezor support should consult the official transport documentation. Bridge exposes a local endpoint and uses secure, signed messages between the application and device. Avoid using third-party or forked Bridge builds — they can introduce security risks.
Frequently asked questions
No — Bridge only relays encrypted messages between your device and trusted apps.
Bridge operates locally on your machine and does not transmit your keys. However, maintain general network hygiene and avoid untrusted networks when performing high-value operations.
Download the latest installer from the official site and run it. Some package managers on Linux may also offer packaged Bridge updates.