Hardware Info
The hardware is very similar to the WL-520gU and uses the heavily integrated BCM5354 core. This device is not to be confused with the WL-330g, which is a distinctly different piece of hardware.
Bootloader Recovery Mode
The device can be booted in bootloader recovery mode by powering on while holding the reset button. The power LED should flash and the router should respond to a tftp'd firmware image and pings at 192.168.1.220. See flashing Asus routers.
Support in 8.09
Unfortunately, the patch that added support for detecting and configuring this device was added after 8.09 was released (see r14624). Everything works fine out of the box with the standard 8.09 image, but the reset button and power LED are not supported. Minor features, yes, but without them it's impossible to get the device in to failsafe mode. Since this device has only one ethernet port, you may find yourself locked out. With failsafe mode you could recover without reflashing.
Your options are applying the patch to the 8.09 sources or downloading a pre-compiled firmware that I'm providing as a courtesy. This firmware matches the 8.09 release exactly, with the patch added and without the kmod-switch package (this is unneeded).
openwrt-WL-330gE-8.09-brcm-2.4-squashfs.trx
- md5sum: 4138fd855319fe1834da2b5a69ae0632
- Apply in the top-level 8.09 source directory like this
wget -qO - http://priv.kupesoft.com/openwrt/wl-330ge/WL-330gE.patch | patch -p 0
- Apply in the top-level 8.09 source directory like this
Serial Port
I have not yet tried the serial port on the board, but see this forum post for more info.