UniFi OS 5.2.10 includes the improvements and bugfixes below.

Bundled application

• UniFi Network 10.5.67
• Identity Sync Service 1.8.4

Improvements

• Updated regulatory support for India.

Bugfixes

• Fixed WiFi Calling issues that could cause dropped calls or one-way audio.
• Fixed an issue where the device could crash when modifying SSID settings.
• Fixed an issue where applying a new SSID could reset bandwidth settings to their defaults.
• Fixed mesh reliability issues after a console power cycle or VLAN configuration changes.
• Fixed an issue where a mesh access point could reconnect in SLO mode after its parent was power-cycled.

UniFi OS 5.2.9 includes the improvements and bugfixes below.

Bundled application

• UniFi Network 10.5.67
• Identity Sync Service 1.8.4

Improvements

• Added support for Mesh MLO.
• Added support for downloading support files in AP mode.
• Improved recovery time after changing parent radio settings.
• Improved wired adoption when Ethernet is connected to the LAN port.
• Improved device stability.

Bugfixes

• Fixed an issue where the built-in screen could display an incorrect uplink signal.
• Fixed an issue where 2.4 GHz channel scanning did not run when all radios were set to Auto.
• Fixed an issue where WiFi clients could lose connectivity after switching an SSID between a VLAN and the native network.
• Fixed an issue where wired adoption could remain stuck in the Ready for Adoption state.
• Fixed an issue where Multicast-to-Unicast conversion did not work correctly.
• Fixed an issue where the device could enter the Click to Resolve state during a console restart.
• Fixed an issue where a 5 GHz channel with a 240 MHz width could fall back to 160 MHz.
• Fixed issues where Multicast and Broadcast Blocker could block ARP requests or fail to function correctly.
• Fixed an issue where IPv6 Router Advertisements could be blocked on Dynamic VLAN networks.
• Fixed issues affecting MLO connectivity, including clients requiring manual reconnection after a console reboot and SSIDs intermittently failing to broadcast.
• Fixed multiple issues affecting UX7 mesh stability, including backhaul reliability, reconnection time, and Network Override behavior.
• Fixed an issue where 5 GHz WiFi could stop broadcasting after a DFS event.
• Fixed an issue where Multicast-to-Unicast conversion did not work correctly.

UniFi OS 5.1.31 includes the improvements and bugfixes below.

Bundled application

• UniFi Network 10.5.67
• Identity Sync Service 1.8.4

Improvements

• Updated Suricata to version 8.0.6.
• Requires Network Application 10.5.48 or newer.
• Improved device stability.
• Improved WAN failover resiliency.
• Improved IPS/IDS memory usage.
• Improved WiFi and Wireless Uplink resiliency.

Bugfixes

• Fixed the security issues mentioned in Security Advisory Bulletin 067.
• Fixed the security issues mentioned in Security Advisory Bulletin 069.
• Fixed an issue where IPS/IDS rule updates could fail, resulting in no IPS/IDS rules being applied.
• Fixed an issue where WAN monitors could fail to resolve when using LAN DNS servers on WAN interfaces.
• Fixed an issue where PPPoE 1500 MTU could stop working after a reboot.
• Fixed an issue where remote mDNS hosts could not be discovered.
• Fixed an issue where Multicast and Broadcast Blocked didn't work.
• Fixed an issue where "Remember Me" local login sessions expired sooner than expected following recent security updates.
• "Remember Me" sessions now remain active for up to 30 days. Re-authentication is still required after UniFi OS upgrades and console reboots.
• For the best authentication experience, use the UniFi Mobile App or unifi.ui.com.

UniFi OS 5.1.30 includes the improvements and bugfixes below.

Bundled application

• UniFi Network 10.5.67

Improvements

• Updated Suricata to version 8.0.6.
• Requires Network Application 10.5.48 or newer.
• Improved device stability.
• Improved WAN failover resiliency.
• Improved IPS/IDS memory usage.
• Improved WiFi and Wireless Uplink resiliency.

Bugfixes

• Fixed an issue where IPS/IDS rule updates could fail, resulting in no IPS/IDS rules being applied.
• Fixed an issue where WAN monitors could fail to resolve when using LAN DNS servers on WAN interfaces.
• Fixed an issue where PPPoE 1500 MTU could stop working after a reboot.
• Fixed an issue where remote mDNS hosts could not be discovered.
• Fixed an issue where Multicast and Broadcast Blocked didn't work.
• Fixed an issue where "Remember Me" local login sessions expired sooner than expected following recent security updates.
• "Remember Me" sessions now remain active for up to 30 days. Re-authentication is still required after UniFi OS upgrades and console reboots.
• For the best authentication experience, use the UniFi Mobile App or unifi.ui.com.

UniFi OS 5.1.19 includes the improvements and bugfixes below.

Bundled application

• UniFi Network 10.4.57

Improvements

• Improved backup restore resiliency.
• Improved system stability.

Bugfixes

• Fixed an issue where a false “No DNS IP Address” message could appear on the screen in rare cases.
• Fixed an issue where loop protection didn't work correctly in rare cases.
• Fixed the security issues mentioned in Security Advisory Bulletin 066.

UniFi OS 5.1.15 includes the improvements and bugfixes below.

Bundled application

• UniFi Network 10.4.57

Improvements

• Improved system stability.

Bugfixes

• Fixed an issue where DNS queries could fail over IPv6 when Content Filtering is used.
• Fixed an issue where obtaining a WAN IP could fail when receiving a malformed DHCP Option 3 on WAN.
• Fixed the security issues mentioned in Security Advisory Bulletin 065.

Bundled application

• UniFi Network 10.3.58

Improvements

• Added support for 6 GHz in Ukraine.
• Added support for Ad Blocking and Content Filtering with Policy-Based Routing.
• Added support for IPv6 WireGuard VPN clients.
• Added support for automatic Let’s Encrypt certificates.
• Allowed Super Admins to restore local backups.
• Improved the Alarm Manager user experience.
• Improved IDS/IPS performance and CPU utilization.
• Improved VPN stability across IPsec, WireGuard, and OpenVPN.
• Improved DHCP client recovery when WAN connectivity is lost.
• Improved DNS over HTTPS (DoH) stability and configuration handling.
• Improved compatibility with ISPs that require periodic ARP on the WAN.
• Improved system stability.
• Improved device discovery resiliency and overall stability.
• Improved WiFi stability.
• Improved routing performance when using QoS rules.
• Improved DNS cache responsiveness.
• Improved firmware upgrade behavior by updating the Network Application to the latest official release after an upgrade.
• Improved backup restore resiliency.
• Improved WireGuard connectivity resiliency.

Bugfixes

• Fixed the security issues mentioned in Security Advisory Bulletin 064.
• Fixed an issue where IPS/IDS events were always reported as low risk.
• Fixed an issue where certificates were renewed daily.
• Fixed an issue where IPsec traffic could be lost.
• Fixed an issue where QoS configuration was not restored after a PPP interface reconnected.
• Fixed an issue where VPN failover scenarios could leave tunnels established but traffic blackholed.
• Fixed an issue where WireGuard fallback behavior did not activate as expected.
• Fixed an issue where OpenVPN DNS query storms could occur when multiple tunnels were configured.
• Fixed various DHCP and IPv6 edge cases that could result in connectivity issues.
• Fixed excessive IGMP join and leave log entries on WAN interfaces.
• Fixed an issue where QoS CPU affinity settings were not properly restored after disabling Smart Queues.
• Fixed an issue where ping monitor behavior was incorrect when using LAN DNS servers.
• Fixed an issue where DDNS updates could fail with Cloudflare.
• Fixed an issue where custom NTP servers could be overridden after reboot.

Bundled application

• UniFi Network 10.0.162

Improvements

• Added time/date mismatch toast messages.
• Improved the Internet connectivity check.
• Improved the backup and restore resiliency.
• Improved the device discovery process for faster detection.
• Improved certificate file validation.
• Improved Web UI Stability and performance.
• Improved the Alarm Manager user experience and resiliency.
• Improved WiFi stability.
• Improved Speed Test stability.
• Improved auto channel selection to reduce interference and improve performance.
• Improved connection resiliency for wired clients.
• Updated Traffic Identification signatures.
• [Identity] Renamed Group to Role when the console is managed by Fabric.

Bugfixes

• Fixed an issue where DNS could leak over VPN connections.
• Fixed an issue with weekday-based schedules.
• Fixed an issue where SD-WAN Spokes didn't reconnect to Hubs in rare cases when experiencing internet outages on the Hub.
• Fixed an issue where enabling QoS prevented access to certain websites.
• Fixed an issue where MLO SSIDs stopped broadcasting after changing WiFi settings.

UniFi OS 4.4.11 includes the improvements and bugfixes listed below.

Bundled application

• UniFi Network 9.4.19

Improvements

• Added a Block Page for Content Filtering and Ad-Blocking.
• Requires UniFi Network 9.4.11 or newer.
• Added IPv6 support for the Direct Connect feature.
• Improved WiFi stability.
• Improved 2.4GHz client connection resiliency.
• Improved Alarm Manager.
• Improved MLO throughput.
• Improved WiFi blackout resiliency.
• Improved the IPsec VPN connection stability.
• Improved Remote Access connection resiliency.
• Improved Hardware Offloading for LAN-to-LAN Traffic.
• Improved system stability.

Bugfixes

• Fixed an issue where the internet connection could be interrupted when using IGMP Proxy in rare cases.
• Fixed an issue where you could experience latency issues while using Traffic Identification.
• Fixed an issue where the Guest Portal didn't work.
• Fixed an issue where you could experience excessive logging related to MAC address scanning.
• Fixed the Traffic Activity display for clients.
• Fixed a gateway configuration issue when applying IPv6 NAT.
• Fixed an issue where RADIUS authentication could fail when using an anonymous identity.
• Fixed an issue where local account users did not receive email notifications.
• Fixed an issue where static routes were missing after switching the WAN type from dynamic to static.
• Fixed an issue where content filtering didn't apply to specific traffic flows.
• Fixed false-positive alerts claiming that the DHCP pool is running out of addresses.

UniFi OS 4.4.10 includes the improvements and bugfixes listed below.

Bundled application

• UniFi Network 9.4.19

Improvements

• Added a Block Page for Content Filtering and Ad-Blocking.
• Requires UniFi Network 9.4.11 or newer.
• Added IPv6 support for the Direct Connect feature.
• Improved WiFi stability.
• Improved 2.4GHz client connection resiliency.
• Improved Alarm Manager.
• Improved MLO throughput.
• Improved WiFi blackout resiliency.
• Improved the IPsec VPN connection stability.
• Improved Remote Access connection resiliency.
• Improved Hardware Offloading for LAN-to-LAN Traffic.
• Improved system stability.

Bugfixes

• Fixed an issue where the internet connection could be interrupted when using IGMP Proxy in rare cases.
• Fixed an issue where you could experience latency issues while using Traffic Identification.
• Fixed an issue where the Guest Portal didn't work.
• Fixed an issue where you could experience excessive logging related to MAC address scanning.
• Fixed the Traffic Activity display for clients.
• Fixed a gateway configuration issue when applying IPv6 NAT.
• Fixed an issue where RADIUS authentication could fail when using an anonymous identity.
• Fixed an issue where local account users did not receive email notifications.
• Fixed an issue where static routes were missing after switching the WAN type from dynamic to static.
• Fixed an issue where content filtering didn't apply to specific traffic flows.
• Fixed false-positive alerts claiming that the DHCP pool is running out of addresses.

UniFi OS 4.3.9 includes the improvements and bugfixes listed below.

Bundled application

• UniFi Network 9.2.87

Improvements

• Added support for CNAME DNS Records.
• Requires UniFi Network Application 9.3 or newer.
• Added the ability to create a new user account while performing the ownership transfer.
• Improved the Analytics and Data Sharing user experience.
• Improved Flows data accuracy.
• Improved DoH resiliency.
• Improved DDNS resiliency.
• Improved system stability.
• Improved the Admins and Users management user experience.
• Improved Remote Access connection resiliency.
• Improved the backup and restore resiliency.
• Improved storage health reporting.
• Improved backup restore resiliency.
• Improved Content Filtering resiliency.
• Improved system stability.
• Updated Traffic Identification signatures.

Bugfixes

• Fixed an issue where the Release channel could change unexpectedly.
• Fixed an issue where transfer ownership could fail in rare cases.
• Fixed an issue where local users didn't receive email notifications using a custom SMTP server.
• Fixed an issue where you couldn't configure SNMP Location and Contact separately; both were required.
• Fixed an issue where users would be required to re-login every hour locally.
• Fixed an issue where the "Plug in Internet Cable" could be shown in rare cases.
• Fixed routing issues when the same subnets are configured on multiple IPsec VPNs.

UniFi OS 4.2.15 includes the improvement listed below.

Bundled application

• UniFi Network 9.1.120

Improvements

• Improved device and WiFi stability.

UniFi OS 4.2.14 includes the improvements and bugfixes listed below.

Bundled application

• UniFi Network 9.1.120

Improvements

• Added support for SIEM Server integration.
• Added the ability to generate specific support files.
• Added support for configuring different release channels per application.
• Added support for Hotspot Portal Certificates.
• Required Network Application 9.1 or newer.
• Added advanced options for mDNS.
• Required Network Application 9.1 or newer.
• Added support for BGP.
• Improved WireGuard VPN stability.
• Improved the backup and restore user experience.
• Improved System Logs.
• Improved static WAN failover resiliency.
• Improved DHCPv6 WAN stability.
• Improved DS-Lite compatibility.
• Improved speed test results accuracy.
• Improved WiFi connection stability.
• Improved WiFi configuration resiliency after radar detections.
• Improved system stability.

Bugfixes

• Fixed rare gateway configuration errors.
• Fixed an issue where Policy-Based Routing could stop working in rare cases.
• Fixed an issue where you could receive false-positive DHCP exhaustion alerts.

UniFi OS 4.1.22 includes the bugfix listed below.

Bundled application

• UniFi Network 8.6.9

Bugfixes

• Fixed the inability to update or install applications.

UniFi OS 4.1.20 includes the improvement and bugfixes listed below.

Bundled application

• UniFi Network 8.6.9

Improvements

• Improved device stability when using minimum RSSI.

Bugfixes

• Fixed the inability to adopt a USP-Strip or USP-Plug.
• Fixed RF Scanning issues.

This is the initial release for the Express 7.

Bundled application

• UniFi Network 8.6.9