Beyonwiz DP-S1 - Manual (Page 76)

Advanced Setup
69
After the DP-S1 upgrades the firmware, it will restart automatically. You
may check the status on the screen and front display window.
NOTE
z If you cannot visually see the firmware upgrading from your PC or
device, please check the network configuration of your PC and DP-S1.
z While the DP-S1 is upgrading the firmware, it should NOT be turned
off.