I had a good bit of difficulty connecting my Omega2+ to an open router. I was able to connect it to a WPA2PSK encrypted router more readily after reading the forum and learning of the adjustments needed in the /etc/config/wireless "config wifi-iface" section. I could not find examples for connecting to an open router. After a bit of trial and error, I have the following working configuration that I thought I would share for someone else who facing the same challenge:
config wifi-iface option device 'ra0' option network 'wlan' option mode 'ap' option encryption 'psk2' option key '12345678' option ApCliAuthMode 'NONE' option ApCliEncrypType 'NONE' option ApCliPassWord '' option ssid 'Omega-182F' option ApCliSsid 'MyOpenSSID' option ApAuthMode 'NONE' option ApCliEnable '1' config wifi-config option ssid 'MyOpenSSID' option encryption 'NONE'
Please let me know if some of those 'NONE' entries should still be set to something. Also, where is the documentation found for the configuration fields of the /etc/config/wireless file?