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When selecting the SSID to join we need to manual edit /etc/config/wireless to ensuring it uses the correct AP.
first you'll need to know the BSSID of the one you want to connect to. if you're on 2.4ghz, at the command line type “iw wlan0 scan”
SSH into your client router with putty
<shell> iw wlan0 scan </shell>
<shell> opkg update opkg install nano nano /etc/config/wireless </shell>