Unbrick wr703n wifi router

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

Hello,
if like myself you push the thing a little too far, you should find this usefull

If nothing is responding anymore on your router :

locate the GND, TX and RX on the board :

solder some wire on it, this is very difficult, because it is really small and the solder doesn't stick well on it. Once it is done, glue everything and let some easy access wire, that could be usefull after.

Plug a 3.3V ttl serial adapter (pl2303, ftdi, ...) on the wire and open a serial terminal (minicom, realterm, docklight, ...) @ 115200/8/N/1/XON-XOFF.

power on the wr703n and quiclky send "tpl" followed by enter to the terminal, this will make the wr703n enter in rescue U-boot hornet.

install a small tftp server on your computer (ex: http://tftpd32.jounin.net/) and plug an ethernet cable between your computer and the wr703n.
Configure the IP adress of your computer to 192.168.1.100 and put the file
openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory.bin
on the tftp server.

On the serial terminal enter the following lines :

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

wait until it has uploaded and another extra couple of second before reset.

unplug the power, wait a bit, replug, the system should be freshly working...

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