How to update Ledger Nano S firmware? (Device maintenance)

Prerequisites for Firmware Update

1. A computer running Windows, macOS, or Linux with an up-to-date web browser.

2. The official Ledger Live application installed and launched.
3. A genuine Ledger Nano S device with at least 20% battery charge.
4. A certified USB cable—preferably the one originally bundled with the device.
5. An active internet connection to verify firmware authenticity and download updates.

Entering Bootloader Mode

1. Ensure the device is powered off by holding the left button until the screen goes blank.

2. Press and hold the left button while connecting the device to the computer via USB.
3. Continue holding the left button until the bootloader screen appears, showing “Bootloader” and a USB icon.
4. Release the button only after the screen stabilizes and displays the correct interface.
5. Ledger Live must detect the device in bootloader mode before proceeding to the update stage.

Initiating the Update via Ledger Live

1. Open Ledger Live and navigate to the Manager tab on the left sidebar.

2. Click the “Update” button next to the displayed firmware version number.
3. Confirm the action when prompted—Ledger Live will begin verifying the firmware signature.
4. Wait for the download to complete; interruption may result in device malfunction.
5. Once downloaded, Ledger Live initiates the installation process automatically—do not disconnect the device.

Post-Update Verification Steps

1. After successful installation, the device reboots and displays the home screen with the new firmware version.

2. Reopen Ledger Live and check the device settings to confirm the updated version matches the latest public release.
3. Navigate to Settings > Security > Verify integrity to ensure no tampering occurred during update.
4. Reinstall all necessary apps through the Manager tab—some may be removed during firmware upgrade.
5. Cross-check recovery phrase using the device’s built-in verification tool to confirm wallet integrity remains intact.

Frequently Asked Questions

Q: Can I update Ledger Nano S firmware without Ledger Live?A: No. Ledger does not support manual firmware flashing or third-party tools. Ledger Live is the only officially supported method.

Q: What happens if the update fails midway?A: The device enters a safe recovery state. Reconnect it in bootloader mode and retry the update. Firmware binaries are cryptographically signed—any corruption triggers automatic rejection.

Q: Will my private keys be affected during the update?A: No. Private keys remain offline and untouched within the Secure Element chip throughout the entire process.

Q: Why does Ledger Live show “Firmware outdated” even after updating?A: This occurs when the device is not in bootloader mode during detection or when cached data persists. Restart Ledger Live, unplug and replug the device while holding the left button, then refresh the Manager tab.