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Grandstream Networks, Inc. HT503 User Manual Page 36 of 38
Firmware 1.0.4.2 Last Updated: 06/2011
SOFTWARE UPGRADE
Software upgrade can be done via either TFTP, HTTP or HTTPS. The corresponding configuration
settings are in the ADVANCED SETTINGS configuration page.
Firmware Upgrade through TFTP/HTTP/HTTPS
To upgrade via TFTP, HTTP or HTTPS, the “Firmware Upgrade and Provisioning upgrade via” field needs
to be set to TFTP, HTTP or HTTPS, 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/1.0.4.2
e.g. 72.172.83.110
NOTES:
y Firmware upgrade server in IP address format can be configured via IVR. Please refer to the
CONFIGURATION GUIDE section for instructions. If the server is in FQDN format, it must be set
via the web configuration interface.
y Grandstream recommends end-user use the Grandstream HTTP server. Its address can be
found at http://www.grandstream.com/support/firmware . Currently the HTTP firmware server IP
address is 72.172.83.110. For large companies, we recommend to maintain their own TFTP/
HTTP/HTTPS server for upgrade and provisioning procedures.
y 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 HT503 will
attempt to retrieve the new image files by downloading them into the HT503 ’s SRAM. During this
stage, the HT503’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/HTTPS fails for any reason (e.g. TFTP/HTTP/HTTPS server is not responding, there
are no code image files available for upgrade, or checksum test fails, etc), the HT503 will stop the
TFTP/HTTP/HTTPS process and simply boot using the existing code image in the flash.
y Firmware upgrade may take as long as 15 to 30 minutes over Internet, or just 5 minutes 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 HTTP server on the public Internet for firmware upgrade.
y Grandstream’s latest firmware is available http://www.grandstream.com/support/firmware .
Oversea users are strongly recommended to download the binary files and upgrade firmware
locally in a controlled LAN environment.
y 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.
Instructions for local firmware upgrade:
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 HT503 device in the same LAN segment.