User's Manual
FIRMWARE VERSION 1.0.0.5     HT802 USER MANUAL              Page 40 of 46 
  Grandstream‘s latest firmware is available at 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. 
Note:   Alternatively, the  user  can  upload  the firmware  single file  from his/her computer using  a local 
directory. For more instructions see below. Also the 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/support/firmware . 
INSTRUCTIONS FOR UPLOAD FROM LOCAL DIRECTORY: 
1-  Download the firmware file from Grandstream web site 
2-  Unzip it and copy the file in to a folder in your PC 
3-  From the HT802 web interface (Advanced Settings page) you can browse your hard drive and 
select the folder you previously saved the file (HT802fw.bin) 
4-  Click ―Upload Firmware‖ and wait few minutes until the new program is loaded. 
Note: Always check the status page to see that the program version has changed. 
INSTRUCTIONS FOR LOCAL FIRMWARE UPGRADE USING 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 HT802 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 
End  users  can  also  choose  to  download  the  free  HTTP  server  from  http://httpd.apache.org/  or  use 
Microsoft IIS web server. 
CONFIGURATION FILE DOWNLOAD 
Grandstream SIP Device can be configured via Web Interface as well as via Configuration File through 
TFTP or HTTP/HTTPS.  ―Config  Server Path‖ is the TFTP  or HTTP/HTTPS server path for configuration 










