Dear Grandstream Customers,
Firmware 188.8.131.52 for GXP1610/GXP1615/GXP1620/GXP1625/GXP1628/GXP1630 is now released as official. Here is the link for the release notes:
The firmware and release notes can be downloaded from:
Please contact us should you have any issues. Thank you for your support for Grandstream products.
Grandstream Networks, Inc.