Check the firmware version

You can check the firmware version on your Ledger Nano S device. The firmware is the software that's running on your device. New firmware versions can add new features, security upgrades or support for new applications. 

Instructions

A device in use
  1. Connect the USB cable to switch on the device.
  2. Enter your PIN code to unlock the device.
  3. Go to Settings and press both buttons to validate.
  4. Go to Firmware version and press both buttons. 
  5. The firmware version is the number displayed under Secure Element.
  6. The microcontroller (MCU) version is also displayed.
New, unused device
  1. Press and hold the right button. The right button is the one far away from the USB connector, closest to the swivel hole.
  2. Insert the USB cable while holding the right button until Recovery is displayed.
  3. Go to Settings and press both buttons to validate.
  4. Go to Firmware version and press both buttons. 
  5. The firmware version is the number displayed under Secure Element.
  6. The microcontroller (MCU) version is also displayed.
Update the firmware

Follow the step by step instructions in the update guide to upgrade the firmware. 

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