Trezor Bridge — Comprehensive Guide (Unofficial)

This is an unofficial user guide. It is not the official Trezor website. Always verify downloads and instructions with official sources before proceeding.

Overview — what is Trezor Bridge?

Trezor Bridge historically acted as a small background service that allowed Trezor hardware wallets to communicate with browsers and desktop apps. It created a controlled channel between your device and local software to sign transactions, manage accounts, and interact with Web3 applications while keeping private keys on the device. This guide explains installation, common issues, uninstall, and migration to the modern Trezor Suite workflow.

Use

Trezor Bridge enabled browser & desktop apps to detect and talk to your Trezor device.

Security

All signing actions require physical confirmation on the device; Bridge does not expose private keys to the web.

Installation & setup (step-by-step)

1. Verify source: Always use the Trezor official site or verified package repositories. Avoid third-party mirror sites to reduce phishing risk.

2. Download: Choose the correct installer for your OS. For macOS, a .pkg or signed installer; for Windows an .exe or MSI; many Linux users use packages or Homebrew where available.

3. Install & run: The Bridge runs in the background and listens on localhost. Connect your device by USB and open the desktop app or browser interface. Confirm any on-device prompts to authorize access.

Troubleshooting common problems

Uninstall & migration

If you have an older standalone Bridge installed, it may be recommended to uninstall it and migrate to the current Trezor Suite or browser-native methods. Follow OS-specific uninstall instructions (macOS/Windows/Linux) and confirm the Suite or browser recognizes your device after removal.

Security & best practices

Bridge is a local helper — it does not and cannot sign transactions without you confirming on the physical device. However, you should:

Notes on deprecation & the modern workflow

Product teams have in recent years moved towards bundling communication into the official desktop app (Trezor Suite) or relying on browser WebUSB where supported. That means standalone Bridge installations are deprecated in many workflows; uninstalling older Bridge installations and migrating to the official Suite simplifies updates and reduces conflicts.

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This page is an unofficial guide. Always consult the official vendor documentation for the most current instructions and security advisories.