It seems the only way to update the Radio as DroidXcon points out is with downgrading using odin stock ed01 then doing OTA updates to get to EE4, though just reading around i would hope that most charge users, and site readers truly Understand everything they are messing with, I'm reading comments above me about people who are likely to be on a rom and are willy nilly flashing whatever they see comes there way without reading ALL the warnings, meaning flashing the ee4 update.zip without first doing downgrade and OTA updates to get The ee4 Radio,Everyone please read all the details first, before trying to mess with your phone.