Update Unifi Controller Firmware via SSH

I have a Unifi Controller server set up with Vultr. I’m looking to update the firmware to a more recent. I keep getting the message that there is a new firmware. First is there a way to stop these messages from popping up every time I log into my controller? Second, does anyone have a link to a good video that shows ssh upgrade to the controller software/firmware? I think it’s just software. Hopefully it will include the ability to do a backup via terminal commands.

If anyone reads this I found a pretty short and sweet video that explains how to do this. It was a lot easier than I thought it would be. Below is a link to the video.