IP Phone User's Manual
Table Of Contents

GXV3140 USER MANUAL  www.grandstream.com 
SOFTWARE VERSION 1.0.0.44 support@grandstream.com 
Step 3: Press “Select” (F1 or the OK button) to access the Maintenance page. In the Upgrade tab, press 
the Down arrow twice to select the Factory Reset option. (Shown in the figure below) 
Step 4: Press the OK button, the phone will display a warning message. (Shown in the figure below) 










