from what i heard, the upgrade happens in backend upgrade and is on best effort basis.

meaning, after u got upgraded to 100mbps, if the area cannot support 100mbps, you're still stucked at 50mbps or any speed serving your area.

same goes to congested areas. after upgraded to 50mbps, but the area still congested with average speed of 20mbps+, you're stucked with that.

the speed and actual experience is NOT GUARANTEED. they only guarantee upgrade from their side, not premise side.

call them lo

i'm using vip5 only. happy with that.