Important Firmware News
- UCM61xx EOL notice: Firmware 1.0.18.x will be the last supported firmware for UCM61xx. UCM61xx will no longer receive new features, but will continue to receive critical security updates and major bug fixes.
- UCM6xxx Upgrade Notice: Please upgrade all UCM devices to latest official firmware for product lifespan and security improvements.
Firmware for all Grandstream products are improved and updated on a regular basis. Please check for the latest upgrade for your product or sign up to receive newsletter for new/beta firmware releases.
Grandstream recommends using HTTP protocol for firmware upgrades. Please note our public firmware upgrade server is using HTTP.
1. Firmware marked with * is released with limited bug fixes and feature implementation, please read release notes for more information.
2. Previous firmware for certain products can be found here.