GDM-906X Series User Manual 
148 
Firmware Update 
 
This section is for updating the latest firmware. 
1.  Press the Menu key, the System 
configuration menu appears. And 
press the NEXT key repeatedly or 
scroll the Knob key to move to 
the Cali&Update - Firmware field. 
2.  Press the F5 (Enter) key or 
Knob key to enter the Firmware 
Update menu. 
Prior to update, make sure if the required 
firmware file is stored within the flash drive 
plugged into the USB port on the front panel. 
Also, user can check the current Master and 
Slave firmware version respectively in this menu.