Upgrade from v3.73 Normal to v3.73 Large does not work on Cerbo GX

Hi

I’m relatively new to the Victron ecosystem. I’m trying to run signalk-server on my new Cerbo GX (serial number HQ2541JHJD).
I followed the instructions here: Venus OS Large image: Signal K and Node-RED [Victron Energy]

When I go to Settings/General/Firmware/Online Updates and change Image Type from Normal to Large, and then click “Check for Updates” I see “Update Available” and a button “Press to update to v3.73”. However, when I press the latter button, nothing appears to happen.

Notably, I do not see the extra info about “Update Build Date/Time” shown in this bug report:

Please advise as to how I can change from v3.73 Normal to v3.73 Large.

This is what I see, and no amount of pressing the “Press to update to v3.73” button appears to do anything.

Had a similar issue and that helped me: