add lvfs-testing framework 16 update notes

active/device_framework_16/framework_16.md

@@ -11,3 +11,13 @@ sudo curl -o /etc/udev/rules.d/50-qmk.rules https://raw.githubusercontent.com/qm
 sudo udevadm control --reload-rules
 sudo udevadm trigger
 ```
+
+## Beta Bios Updates
+
+```bash
+# With charger attached
+sudo fwupdmgr enable-remote lvfs-testing
+sudo fwupdmgr refresh --force
+sudo fwupdmgr get-updates
+sudo fwupdmgr update
+```