Firmware Upgrade Via Usb - Grandstream Networks WP820 User Manual

Instructions for local firmware upgrade via TFTP:
1. Unzip the firmware files and put all of them in the root directory of the TFTP server;
2. Connect the PC running the TFTP server and the WP820 device to the same LAN segment;
3. Launch the TFTP server and go to the File menu �� Configure �� Security to change the TFTP server's default setting from
"Receive Only" to "Transmit Only" for the firmware upgrade;
4. Start the TFTP server and configure the TFTP server in the phone's web configuration interface;
5. Configure the Firmware Server Path on your WP820 to the IP address of the PC;
6. Update the changes and reboot the WP820.
End users can also choose to download a free HTTP server from

Firmware Upgrade via USB

For users that could not use remote upgrade or could not access the phone's Web GUI to upload firmware, upgrading via
external USB flash drive is an alternative. Follow the steps below to upgrade the WP820 via USB:
1. Download the firmware file to PC and save it in the USB flash drive
2. Insert the USB flash drive to the WP820.
3. The following message will appear indicating that the USB drive is connected and the
icon will appear in the status bar.
4. Power cycle the WP820 and wait for the device to detect the firmware.
5. Press OK to start the upgrade.
https://httpd.apache.org/
Figure 118: USB disk connected
Figure 119: New Firmware Detected
or use Microsoft IIS web server.