I have tried to change firmware from dlink to DD-WRT for the first time for DIR-615-E4 using Emergency Room Interface. I upload the file "dir615e4-factory-to-ddwrt-firmware.bin" and press submit, then I saw on router, globe button and 4 LAN leds lights up and then the webpage was showing as still loading, but I saw no activity on my LAN port, so I thought the update is successful, then I unplug the power and power-on, but after then I cannot get the LAN working or cannot even reset or get back Emergency Room Interface.
Please help me getting my router back to its factory firmware or to DD-WRT. Thanks for all helps.