Firmware Update - FAQ

Frequently asked questions about the Ledger Nano S firmware update are answered below. For step by step instructions, please refer to our update guide.


How to fix a Ledger Nano S displaying MCU firmware is not genuine?
Hold the right button while reconnecting the device to boot in Recovery mode. Open Manager once the device is on the dashboard. Click on update in the Manager and follow the instructions.

How to fix a Ledger Nano S stuck on Bootloader or MCU firmware is outdated?
Restart Ledger Live. Then go to Settings > Help > Repair and follow instructions.
If that did not work. Please try each of the following steps before retrying the update in Manager:

  1. Close possibly interfering applications (antivirus, firewall, etc).
  2. Verify that the left button of your device is not stuck.
  3. Disconnect your device and reboot your computer.

How to fix a Ledger Nano S stuck on Update?
Restart Ledger Live and open Manager. The update will then resume automatically.

Windows doesn't recognize the device. How to fix this?

  1. Open Devices and Printers from Control Panel.
  2. Double-click Nano S and open the Hardware tab.
  3. Select USB Input Device and click Properties.
  4. Click Change Settings
  5. Click the Driver tab.
  6. Click Update driver and select automatic driver selection.
  7. Repeat this for both USB Input Devices.

Is it possible to downgrade the firmware?
No. For security reasons, it is not possible to downgrade the firmware of your Ledger Nano S.

Why didn't my Ledger Nano S prompt to check the Identifier?   
Three screens are shown in an automated loop. If the right button is pressed before the other screens are shown, the update will be installed before you could have checked the identifier. As long as the update is fully installed you can continue using your device. 

Will I need my 24-word recovery phrase for the update?
No, starting from firmware version 1.3.1, firmware updates do not require the recovery phrase to be restored. However, as a precaution make sure your 24 recovery words are properly backed-up and securely stored before starting the update.

General questions

Does the update affect my crypto assets?
The private keys on your device are fully backed up by the 24-word recovery phrase. As long as your Recovery sheet is securely stored, there is no risk to your assets.

How to update a Ledger Nano S?
Please refer to our update guide for step by step instructions.

Do I need to update my Ledger Nano S?
Updating your Ledger Nano S is strongly recommended. It included security improvements as well as new features.

What changes are included in the update?
Please refer to our blog post.

Do I have to update my Ledger Nano S if I am not using it?
We recommend regularly updating your devices to benefit from the optimal security level and user experience offered by our products.


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