I upgraded my internet from premium to ultimate using the $5 tier upgrade promo following the online steps. It never mentioned anything about professional installation and its fees, and it allowed me to complete the entire process.
However, I view my bill a week later, I am charged $25 more a month instead of $5 a month because apparently the promo does not apply to the ultimate tier, even though the system allowed it to process. On top of that, I am being charged $60 for an installation fee that was never mentioned. Why was the installation fee never mentioned? Because the promotion was not suppose to cover the ultimate tier, which is the only tier that requires professional installation.
So just fair warning about the tier upgrade promo. Do not upgrade to ultimate using the promo. It will let it go through, but they will still charge you full price a week later without telling you. Even when I ask to un-upgrade me, apparently its too late to reverse the service charge.