Initially I tries to update the firmware through openwrt, but due to power failure, the same could not be updated. After that i used the TFTP server to update the firmware. It has been updated finally. But now a new problem came.

When i switched on the router one time ALL led blink and after that nothing. My router is without any LED. However, if i connect to the ethernet cable, only one LED will solid on, which will vary based on the changing the port.

Please help me to get out of this.