Samsung SCX-3405W does not Work after the Firmware Update?

Hi, does anyone know how to reset the printer software or run some bootloader mode in the printer? After upgrading to SCX3405W_V3.00.02.05, the printer remains on the power button and the green status icon. It does not respond to connecting to USB or attempting to turn on. Any idea what can be done?? maybe re-update the firmware?