Folgende drei Befehle im Terminal eingeben:
cd /tmp
wget http://downloads.openwrt.org/attitude_adjustment/12.09/ar71xx/generic/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-sysupgrade.bin
sysupgrade openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-sysupgrade.bin