ContributionsMost RecentMost LikesSolutionsRe: DOCSIS 3.1 Upgrade Scam I got the same email and info. I upgraded to a 3.1 modem but was still getting emails telling me that I had to upgrade the acct. I upload videos to YouTube so the upload speed is really nice to have. I thought $15 more a month for gigablast, sure why not. Right now my DL speed is 100 Mbps slower than before.