DP750/752/760 Release Notes
DP750/752/760 1.0.21.17 Firmware Files
HTTP Firmware upgrade path for BETA release is:
firmware.grandstream.com/BETA
Note:
DP730/DP725/DP722/DP720 firmware can be upgraded once the connected DP750/752 base is upgraded to new firmware. The handset version can be different from the base. Please refer to release notes for the handset version number.