On 3/19 (according to Vizio) my tablet took the upgrade to HC. Since then, the wifi will not connect AT ALL. I have attempted 6 different wireless router/access points as well as many settings including a factory reset without luck. I have even sent the tablet to Vizio and they cannot make it connect either. They claim that I only had a 90 day warranty because it was originally a re-certified product and since I didn't call in within 1 month of the upgrade, there is nothing that they can do. Does anyone know of another way to connect to possibly take the newer code to see if this repairs anything? Vizio engineering said they had no method to get it on there, which I find surprising. I basically have a paper weight at this point. Anyone have ideas?