Navigate to > Upgrade and Provisioning > Upgrade . Locate the Upload Firmware field. Click Select File , choose your local .bin file, and click Upgrade . Leave the browser tab open. The
| Component | Role | Customization | |-----------|------|----------------| | | Call switching | Grandstream adds proprietary SIP headers for BLF, Paging, Multicast | | PHP-FPM + Lighttpd | Web GUI | Hardcoded credentials hashing (SHA-256 + salt) | | Redis | Cache & real-time events | Stores WebRTC session data | | PPTP/L2TP/OpenVPN | VPN server | Firmware controls firewall rules for VPN clients | | Fail2ban | Security | Automatically blocks IPs after 3 failed web logins | ucm6202 firmware
After the reboot, check the Status > System Info page to ensure the "Software Version" matches your target version. Navigate to > Upgrade and Provisioning > Upgrade
By keeping the UCM6202 firmware up to date, administrators can ensure the device remains secure, efficient, and compatible with evolving VoIP technologies. Leave the browser tab open