This is the instrction for overwriting oem-firwmare of a5-v11-router with opensource openwrt-firmware. Steps: 1)on a windows machine, unzip a5-v11-openwrt.zip to a usb-pen-drive 2)insert the usb-pen-drive to the usb port of a5-v11-router. 3)Connect CAT-5 network cable between a5-v11-router and your windows(or linux) desktop. 4)power ON +5v supply to a5-v11-router. 5)red LED on a5-v11-router glows for few seconds, then LED stars blinking between red and blue. 6)