> For the complete documentation index, see [llms.txt](https://support.keyst.one/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.keyst.one/getting-started/firmware-upgrading/check-the-sha256sum-of-the-firmware-update-file.md).

# Verify the SHA256 Checksum of the Firmware Update File

The Keystone firmware enables verification of the SHA256 checksum of the firmware update file.

You can verify the SHA256 checksum of the firmware update file with the Keystone firmware through the **2 available options** provided below.

1.  Go to the [official website](https://keyst.one/firmware) and choose the version you need. Follow the hints and download the firmware upgrade file (e.g. M-10.2)

<figure><img src="https://2420738387-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FrQXQQRT6etffwhkFpfZG%2Fuploads%2FrajJLji0vWdUgmbAozsB%2FScreen%20Shot%202023-03-21%20at%2015.49.42-side.png?alt=media&amp;token=2c920d49-1f22-40d4-9424-e2a977ecb48f" alt="Keystone-checksum-1"><figcaption></figcaption></figure>

2. Unzip the firmware file "M-10.2" and extract the "update.zip" file.

<figure><img src="https://2420738387-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FrQXQQRT6etffwhkFpfZG%2Fuploads%2Fg1YmG0cjdcoUgi2SN2IJ%2FScreen%20Shot%202023-03-23%20at%2010.29.20.png?alt=media&amp;token=629b9929-1199-40a0-b5fe-38a4261da0ae" alt="Keystone-checksum-2"><figcaption></figcaption></figure>

3. **2 options** to verify the SHA256 checksum

{% tabs %}
{% tab title="Veriftied by Keystone" %}

1. Insert the microSD card into the Keystone and activate the device.
2. Verify that the "sha256" value displayed on the Keystone matches the one displayed on the official website.

<figure><img src="https://2420738387-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FrQXQQRT6etffwhkFpfZG%2Fuploads%2FHObCD1GuH9FDbf4X42M7%2FScreen%20Shot%202023-03-23%20at%2010.28.58-side.png?alt=media&amp;token=9ca5f62d-cc98-4944-a453-204377278ecd" alt="Keystone-checksum-3"><figcaption></figcaption></figure>
{% endtab %}

{% tab title="Veriftied by 3rd party tools" %}

1. Use the adb/command line tool on your PC or Terminal on Mac to run the following command:

Windows PowerShell/Command Prompt: certutil -hashfile file\_path/file\_name SHA256

MacOS Terminal: shasum -a 256 /file\_path/file\_name

Linux: sha256sum /file\_path/file\_name

2. Check whether the obtained SHA256 matches the SHA256 checksum displayed on our official website.
   {% endtab %}
   {% endtabs %}