this is backup purpose and for easy memorise.
4M FLASH. 16M RAM
Asus WL-330ge mini router, open the housing and reveal the serial port,
soldering for 4 pins header
next the the BROADCOM chip, +3.3V, RX, TX, GND
this is serial port, 3.3v IO, RS232, N81, 115200 baud
Openwrt 15.05 has bug, Luci dead after something opkg
try 15.05.1, should fixed the bug, but somehow, dead also