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Grandstream Networks, Inc. HT-502 User Manual Page 29 of 35
Firmware 1.0.0.39 Last Updated: 03/2007
SOFTWARE UPGRADE
Software upgrade can be done via either TFTP or HTTP. The corresponding configuration settings are in
the ADVANCED SETTINGS configuration page.
FIRMWARE UPGRADE THROUGH TFTP/HTTP
To upgrade via TFTP or HTTP, the “Firmware Upgrade and Provisioning upgrade via” field needs to be set
to TFTP or HTTP, respectively. “Firmware Server Path” needs to be set to a valid URL of a TFTP or HTTP
server, server name can be in either FQDN or IP address format. Here are examples of some valid URL.
e.g. firmware.mycompany.com:6688/Grandstream/1.0.0.39
e.g. 168.75.215.189
NOTES:
• TFTP server in IP address format can be configured via IVR. Please refer to section
CONFIGURATION GUIDE for instructions. If TFTP server is in FQDN format, it must be set via
web configuration interface.
• End users recommended using our TFTP server. Its address can be found at
http://www.grandstream.com/firmware.html
. Currently, the TFTP server, your HT502 can be
upgraded from has an IP address 168.75.215.189. For companies, we recommend to maintain
their own TFTP/ HTTP server for upgrade and provisioning procedures.
• Once a “Firmware Server Path” is set, user needs to update the settings and reboot the device. If
the configured firmware server is found and a new code image is available, the HT ATA will
attempt to retrieve the new image files by downloading them into the HT-502’s SRAM. During this
stage, the HT-502’s LEDs will blink until the checking/downloading process is completed. Upon
verification of checksum, the new code image will then be saved into the Flash. If TFTP/HTTP fails
for any reason (e.g., TFTP/HTTP server is not responding, there are no code image files available
for upgrade, or checksum test fails, etc), the HT-502 will stop the TFTP/HTTP process and simply
boot using the existing code image in the flash.
• Firmware upgrade may take as long as 1 to 20 minutes over Internet, or just 20+ seconds if it is
performed on a LAN. It is recommended to conduct firmware upgrade in a controlled LAN
environment if possible. For users who do not have a local firmware upgrade server, Grandstream
provides a NAT-friendly TFTP server on the public Internet for firmware upgrade. Please check the
Services section of Grandstream’s Web site to obtain our public TFTP server’s IP address.
• Alternatively, user can download a free TFTP or HTTP server and conduct local firmware upgrade.
A free windows version TFTP server is available for download from
http://support.solarwinds.net/updates/New-customerFree.cfm
. Our latest official release can be
downloaded from http://www.grandstream.com/y-firmware.htm.
Directions to Download TFTP Server
:
1. Unzip the file and put all of them under the root directory of the TFTP server.
2. Put the PC running the TFTP server and the HT–502 device in the same LAN segment.
3. Please go to File -> 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, in the phone’s web configuration page
5. Configure the Firmware Server Path with the IP address of the PC
6. Update the change and reboot the unit
User can also choose to download the free HTTP server from http://httpd.apache.org/ or use Microsoft IIS
web server.