1. Please download  this file

          http://www.planex.net/driver/router/BRL-04FPU/brl-04fpu_v8.25.01p_eng.bin

          on your desktop

 2.

 3.

  4.

   5. Choose the file you download  in step 1

       , then double click it.

  6.

  7.Wait for a minute, the firmware will upgrade