supportsRegion
Whether this firmware's region table contains region. Regions declare the release that introduced them via RegionInfo.minFirmware; older firmware would treat an unknown region code as UNSET, so the picker hides it.
Whether this firmware's region table contains region. Regions declare the release that introduced them via RegionInfo.minFirmware; older firmware would treat an unknown region code as UNSET, so the picker hides it.