Firmware for GSC3510/GSC3505 released as Beta



Dear Grandstream Customers,

Firmware for GSC3510/GSC3505 is now released as Beta. Here is the link to 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.

Technical Support
Grandstream Networks, Inc.



I’m extremely happy with the new mp3 player option and it works great! Please consider adding an option to shuffle the playlist or add multiple schedules. In certain zones, I only play music for an hour in the morning and an hour in the afternoon. Currently, the speaker will play the same songs over and over in the same order each time.

Thank you!


Anyone else running this? I’ve got 60 speakers to upgrade and debating on doing version 19 or jumping to this one…


you should update as it allows you to manage and play from your browser or device


I want to make sure it’s stable. I don’t want to roll it out and find its buggy and has lots of issues…