Epic 4G Touch been acting up? Never fear, a fix for the WiMAX-equipped handset is on the way. Sprint's begun rolling out an update for its Galaxy S II variant that should addresses a couple of irksome bugs -- namely, the loss of 4G hotspot connectivity while on a call, and a boost for the wireless radio. The firmware update'll hit phones in a phased release and should take about ten minutes to complete. Sorry, there's no option for a manual download, so you'll just have to wait your turn in the random line.