OpenWrt on a TL-WR703N

Install Over SSH

scp bin/ar71xx/openwrt-ar71xx-generic-root.squashfs root@192.168.1.1:/tmp/
ssh root@192.168.1.1 "mtd -r write /tmp/openwrt-ar71xx-generic-root.squashfs firmware" 

Install Over TFTP

Assuming you have a working tftp server and put your binary in in the root.

When uboot is loading type "tpl" to halt the auto boot process.

hornet> tftpboot 0x81000000 openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory.bin
hornet> erase 0x9f020000 +0x3c0000
hornet> cp.b 0x81000000 0x9f020000 0x3c0000
hornet> bootm 9f020000

See: http://forums.openpilot.org/blog/52/entry-92-unbrick-wr703n-wifi-router/

Install Over Stock Web Interface

Warning: Check out http://wiki.openwrt.org/toh/tp-link/tl-wr703n to make sure your version is good to go.

Custom Image

make image PACKAGES="mosh-server -firewall -iptables -kmod-ath9k -wpad-mini -ppp -ppp-mod-pppoe" PROFILE=TL-WR703N