Required downloads:

• debwrt-firmware-brcm47xx-squashfs.trx
• debwrt-modules-brcm47xx-Broadcom-b43-2.6.34.5-angel-2.0-1.tar.gz
• debwrt-rootfs-mips-2.0-1.tar.bz2

Follow normal DebWrtInstallation but:

• to enable robocfg service: set ENABLED=1 in /etc/default/robocfg, add symlink from /etc/init.d/robocfg to /etc/rcS.d (must be started before "networking" service)
• remove /etc/network/interfaces (it is just a symlink by default) and create new one, interfaces.interfaces.seperate-wlan-lan is a good starting point for client mode.

p.s. don't forget about NetConsole