docs/guides/beta.md: Add documentation

docs/guides/beta.md

@@ -0,0 +1,57 @@
+# Dasharo Beta
+
+## Introduction
+
+This document explains the Dasharo Beta update channel, how to enroll in it and
+how to downgrade back to stable.
+
+The Dasharo Beta update channel provides pre-release binaries ready for public
+testing by a group of beta testers. These binaries are not tested as thoroughly
+as full releases, but provide a preview of future features and enhancements.
+
+Dasharo Beta is only available for a select group devices. Currently, these
+include:
+
+- NovaCustom V540TU
+- NovaCustom V560TU
+
+## Joining the beta tester group
+
+Please follow the steps [here](https://docs.dasharo.com/ways-you-can-help-us/#join-dasharo-beta-testing-group)
+to join the Dasharo Beta Testing group.
+
+## Enabling
+
+To enable Dasharo Beta updates, execute this command in a terminal:
+
+```bash
+fwupdmgr enable-remote lvfs-testing
+```
+
+## Checking for updates
+
+To check for updates:
+
+```bash
+fwupdmgr refresh
+fwupdmgr get-updates
+```
+
+> Beta Releases are also announced through the `Dasharo - Beta` channel in the
+> Dasharo Matrix Space.
+
+## Updating
+
+To update:
+
+```bash
+fwupdmgr update
+```
+
+## Downgrading
+
+To downgrade:
+
+```bash
+fwupdmgr downgrade
+```

mkdocs.yml

@@ -455,6 +455,7 @@ nav:
   - 'Guides':
       - 'Updating your firmware': guides/firmware-update.md
       - 'Capsule updates': guides/capsule-update.md
+      - 'Beta Updates': guides/beta.md
       - 'Flashing custom firmware': guides/firmware-reflash.md
       - 'Firmware signing for vboot': guides/vboot-signing.md
       - 'Dasharo TrustRoot Fusing': guides/cpu-fusing.md