My DIR-615 Revision E FW 5.10na is randomly dropping the connection. Sometimes it will go days, sometimes it is only hours. When it drops, the SSID is no longer being seen by any devices (tablets and mobile on Android, laptop on Windows 7 or old PC on XP). The wired connections remain connected, but connecting a new wired device does not work until power is cycled to the router. This is not earth changing, but it is a pain in my butt. My gut instinct was to update the firmware, but there are no updates for this device on from D-Link. Any help/advice would be appreciated.