I would like to upgrade to the viasat wi-fi modem but can't find anywhere at their site to do so.
If a plan is listed as "Up to 25 Mbps", it would probably include the Wi-Fi modem.. The older modem only supported 12 Mbps. The Wi-Fi modem can also be used on the 12 Mbps plans. Viasat-2 plans will probably show up as 50 Mbps or 100 Mbps. You really won't gain much if you upgrade to the SB2+ (wi-fi) modem. At times, I saw speed over 20 Mbps when I had the older modem. And, It will cost an extra $5 a month for the wi-fi upgrade. Most people that have the SB2+ disable the built in wi-fi and use their own external wi-fi router.