Simple Firmware Update Tool

Please follow the below guide for Firmware Upgrade.

Step1：Power on the device and enter system upgrade mode.

Step2：Connect the device to PC with USB cable.

Step3：Un-compress rar file and Execute GH625FWUpgrade.exe.

Step4：Select the device Comport number.

If you don’t know which Comport is correct, please follow below guide to check it.

1. Click Start, click Control Panel, click Performance & Maintenance, and then

click System.

2. On the Hardware tab, click Device Manager. Double-click the COM/LPT Port

to find USB-to-Serial Comm. Port (COM “number”).

*If Device Manager would not detect the device please check USB cable and

confirm the USB driver has been installed.

Step5：Click “…”button to select the Firmware file (*.ghx).

Step6：Once every setting is ready, click Upgrade button to begin, do

not pull out USB cable during the Upgrade process.

Note: Interruption of firmware update will cause GH-625

malfunction.