Connecting Ledger to MetaMask means adding your hardware wallet as a signer inside MetaMask so you keep full custody while using dApps. You can do this with a USB cable on desktop or Bluetooth on mobile. Connect Ledger to MetaMask: What You Need to Know MetaMask is a software wallet. Ledger is a hardware wallet. When you connect them, MetaMask becomes the interface and Ledger becomes the key holder. Every transaction still needs physical confirmation on your Ledger device. This matters because a connected hardware wallet protects you from malware on your computer. Even if someone controls your browser, they cannot move funds without your Ledger. The trade-off is an extra confirmation step per transaction. Here is how the two connection methods compare: Method Best for Requirement Limitation USB cable (WebHID) Desktop browsers Chrome, Brave, or Edge Not supported on Firefox Bluetooth Mobile (iOS / Android) Ledger Nano X or Stax Not available on Nano S Plus Ledger Live bridge Desktop with Ledger Live installed Ledger Live open Conflicts with WebHID Both methods require the Ethereum app installed on your Ledger. You install it through Ledger Live. Once the app is ready, MetaMask can detect the device. Step-by-Step: How to Connect Ledger to MetaMask Install the Ethereum app on your Ledger. Open Ledger Live, go to “My Ledger,” search for “Ethereum,” and install it. Update your Ledger firmware. In Ledger Live, check for OS updates and install any available version. Update MetaMask to the latest version. In the extension or mobile app, go to Settings > About and confirm you are current. Close Ledger Live. Ledger Live can block the connection between MetaMask and your device. Unlock your Ledger and open the Ethereum app. Navigate to the Ethereum icon and press both buttons. The screen should say “Application is ready.” Open MetaMask and click your account dropdown. Select “Add account or hardware wallet.” Choose “Add hardware wallet.” Select Ledger from the list. Connect via USB or Bluetooth. On desktop, plug in the device and approve the browser prompt. On mobile, pair via Bluetooth. Select the account you want to import. Check the box next to the Ethereum account and click “Unlock.” Your Ledger account now appears in MetaMask. It works like a normal account, but every signature requires your device. Common Issues and How to Fix Them UNKNOWN_ERROR (0x650f): Close Ledger Live. In MetaMask, go to Settings > Advanced > Preferred Ledger Connection Type and select WebHID. Then retry the connection. Device not detected: Make sure the Ethereum app is open on your Ledger and the device is unlocked. Try a different USB cable or port. Bluetooth pairing fails: Confirm Bluetooth is enabled on both your phone and your Ledger Nano X. Keep the device within a few feet. MetaMask shows no accounts: You may be on the wrong derivation path. When importing, switch between “Ledger Live” and “Legacy” to find your accounts. Firefox connection drops: Firefox no longer supports the U2F method MetaMask uses. Switch to a Chromium-based browser like Chrome or Brave. Linux permission error: Run sudo chmod a+rw /dev/hidraw* in a terminal, replacing the device number with the one shown in chrome://device-log/. How to Contact Onchain Support Safely Onchain does not offer phone support. Anyone calling you claiming to be Onchain support is a scammer. Use only these official channels: In-app chat (bottom-right corner of the Onchain dApp) Telegram group (link available inside the app) Onchain staff will never ask for your seed phrase, private key, or 2FA code. If someone asks for any of these, they are trying to steal your funds. Close the chat and report the account. Check the official Onchain page for current details. Frequently Asked Questions Can I connect Ledger to MetaMask on mobile? Yes, if you use a Bluetooth-capable Ledger. The Nano X and Stax work with the MetaMask mobile app. Pair the device in MetaMask under “Add hardware wallet,” then confirm the code on both screens. Why does MetaMask not see my Ledger Nano S? The Nano S does not have Bluetooth. It only works with the MetaMask browser extension on desktop via USB. If you need mobile support, use a Nano X or Stax. Do I need to pay gas to connect Ledger to MetaMask? No. Connecting a hardware wallet is free. You only pay gas when you send a transaction. Onchain, however, lets you sign Permit2 approvals off-chain with zero gas — the server wallet pays the gas. Can I use Ledger with Onchain? Yes. Onchain supports Ledger through the MetaMask bridge. Connect your Ledger to MetaMask first, then connect MetaMask to Onchain. You keep custody while granting token permissions with off-chain signatures. What is the Permit2 contract address Onchain uses? The official Permit2 contract is 0x000000000022D473030F116dDEE9F6B43aC78BA3. This is the Uniswap Permit2 contract on Ethereum Mainnet. Onchain uses it for token approvals. Key Takeaway Connecting Ledger to MetaMask gives you hardware-level security with software-wallet convenience. You approve every transaction on your device, and MetaMask handles the dApp connection. For gasless Permit2 approvals, Onchain offers a bridge that works with Ledger via MetaMask — sign off-chain, pay zero gas, and keep your keys on the hardware. Ready to try Onchain? Onchain lets you grant Permit2 token permissions with a single off-chain signature. No gas. No seed phrase exposure. No phone support scams.