Router Firmware upgrade needed?

Hi,

I've connected my new router up, we're due to switch over tomorrow (16th, currently have contract with talktalk but we're getting a new contract for double the speed)

I ran a service test and apparently I need a firmware upgrade for my router.

I'm new to all this (my first ever broadband contract!) and any help would be appreciated!

Also, I see an option for UI update. How can I do this?

Thanks,

David