I'm using FON2200 mk3 firmware.
opkg install reaver_1.4-1_atheros.ipk
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ifconfig mon.wlan0 down
ifconfig wlan0 down
airmon-ng start wlan0
reaver -i mon0 -b xx:xx:xx:xx:xx:xx -vv
Reaver v1.4 WiFi Protected Setup Attack Tool
Copyright © 2011, Tactical Network Solutions, Craig Heffner <cheffner@tacnetsol.com>
My problem is FON2200 restarts suddenly after that.