Dear Grandstream Customers,
Firmware 1.0.15.4 for GWN7600/7610 is now released as official. Here is the link to the release notes:
http://firmware.grandstream.com/Release_Note_GWN7600_1.0.15.4.pdf
The firmware and release notes can be downloaded from:
http://www.grandstream.com/support/firmware/
Please contact us should you have any issues. Thank you for your support for Grandstream products.
Technical Support
Grandstream Networks, Inc.