This might be related to this issue.
I have Synapse 4 installed on my Razer Blade 16. Yesterday, the app updated itself to version 1.1.97. It now shows an available firmware update:

Clicking on “Latest version: 1.1.1.3” does nothing. And opening the Firmware update link on the dashboard in Synapse directs me to this page that does not list the update in question:

The Firmware on my Blade is up to date however. Only the Bios updater refuses to update from 2.02 (current) to v2.03 (but that is another issue I guess).
Is this a bug in Synapse?