In the meantime, all the LED indicators of the router should be off and it’s a normal phenomenon because the router is rebooting itself. Press the RESET button around 5~10 seconds until the Power LED indicator of router starts flashing, then you could stop pressing.Freeing unused kernel memory: 376K Write protecting the kernel text: 5684k Write protecting the kernel read-only data: 1868k start service starting Architecture code for x86 udevtrigger: parse_config_file: can't open '/etc/udev/nf' as config file: No such file or directory ext4: Unknown symbol _put_user_4 (err 0) ext4: Unknown.