Trezor Bridge — Secure Desktop Connector

A lightweight, trusted bridge that connects your hardware wallet to desktop apps and web wallets. Fast, private, and built for secure firmware and transaction signing.

Overview

Trezor Bridge is a small, local application that lets your browser or desktop wallet talk to your Trezor hardware device safely and reliably. By acting as a focused intermediary, Bridge avoids exposing your device directly to the browser environment while enabling features such as firmware updates, device initialization, and transaction signing. It runs on Windows, macOS, and Linux and is designed to be unobtrusive — it launches when needed, performs secure transport, and then stays out of the way.

Key Features

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Secure message channel

All communications are limited to the local machine and encrypted; Bridge only routes messages between the app and the hardware device and does not store private keys or transaction state.

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Low latency & reliable

Bridge minimizes delays for signing and firmware flashing, ensuring a responsive user experience for both beginners and power users.

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Automatic update checks

Bridge can check whether your device firmware or Bridge itself needs an update and guides you through a safe upgrade process.

Install & Setup

Install Bridge in minutes. The steps below are quick and platform-agnostic.

  1. Download: Get the latest Bridge installer for Windows, macOS, or Linux from the official source.
  2. Run Installer: On macOS allow system permissions when prompted; on Windows accept the installer’s UAC prompt.
  3. Connect Trezor: Use the official USB cable and wait for your browser or desktop app to detect the device.
  4. Follow Prompts: Initialize new device or enter existing PIN/recovery to unlock your wallet when requested.

Note: Bridge communicates only on localhost. If your firewall blocks it, allow connections to the local loopback address (127.0.0.1).

Download Bridge Available for Windows, macOS, Linux

Security Model

Bridge intentionally keeps a narrow security surface. It never asks for your recovery seed or stores private keys. Device PINs and passphrases are always handled on the hardware device itself — signing requests are displayed on the device and require your confirmation. Bridge simply transports the signed data back to the requesting application. For high security, combine Bridge with best practices: keep firmware up-to-date, verify fingerprint of downloads, and only use trusted wallet interfaces.

What Bridge does NOT do

  • It does not access or upload your seed or private keys.
  • It does not run remote code on the device.
  • It does not act as a cloud backup service.

Troubleshooting

If Bridge or device detection fails, try these steps:

1) Reconnect the USB cable and try another port. 2) Restart Trezor Bridge (or your computer) if detection stalls. 3) Temporarily disable firewall/antivirus to rule out local blocking. 4) Use the official cable — some third-party cables only charge. 5) Check for updates to Bridge and device firmware.

FAQ

Do I need Bridge to use my Trezor?

Bridge is required for many desktop and browser-based wallets to communicate with your device. Some native desktop wallets might use an embedded connector instead.

Is Bridge safe to run?

Yes — Bridge runs locally and does not transmit secret material to the internet. Always obtain the installer from the official source and verify signatures when possible.