I went through this entire process and the Marketplace still remained grayed out after multiple full restarts.
(My data was turned off though in the options. I never turn it off manually, so it may be an issue for you guys as well)
Anyway, I decided to click on the grayed out market out of curiousity, and it took me to the Marketplace.
I suggest you guys just try.
A little weird, but I’m currently downloading the update.