Hello, failed an update on my AC750 RE200 firmware, has since refused to connect to an internet or show up as a network in settings even if power LED is solid on. Plugging by ethernet, it showed up as an unidentified network with no internet and didn't connect to the configurators web page. Tried pressing/ holding the reset button but it does not reset the device. Power LED is solid on and all others are off. Any help please?