Updating firmware : Cosmos 4k

I have watched the official YouTube video to update firmware for cosmos but it’s so different from the Menu I’m seeing in mine. Mine was just delivered today.

Question: do I need to be in the HDMI mode or AndroidTV mode to update firmware ?

I cannot seem to be able to get the Nebula Connect to work on my iPhone15 pro max. It lands on the weird looking screen which does not allow me to Login to my Google account.