Application Guide
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DP750/DP720 Administration Guide 
Version 1.0.3.37 
Figure 43: Firmware Upgrade Page 
Upgrading via Local TFTP/HTTP Servers 
For users that would like to use remote upgrading without a local TFTP/HTTP server, Grandstream offers 
a NAT-friendly HTTP server. This enables users to download the latest software upgrades for their devices 
via this server. Please refer to the webpage: http://www.grandstream.com/support/firmware 
Alternatively, users can download a free TFTP or HTTP server and conduct a local firmware upgrade. A 
free windows version TFTP server is available for download from: 
http://www.solarwinds.com/products/freetools/free_tftp_server.aspx 
http://tftpd32.jounin.net/. 










