UniFi OS 5.1.33 includes the improvements and bugfixes below.

Bundled

• UniFi Network 10.5.67
• Identity Sync Service 1.8.4

Bugfixes

• Fixed an issue where applications could fail to install or update.

UniFi OS 5.1.31 includes the improvements and bugfixes below.

Bundled

• UniFi Network 10.5.67
• Identity Sync Service 1.8.4

Improvements

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

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 "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.
• 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 the Access application would start when starting the Protect application.

UniFi OS 5.1.30 includes the improvements and bugfixes below.

Bundled

• UniFi Network 10.5.67
• Identity Sync Service 1.8.3

Improvements

• Improved device stability.

UniFi OS 5.1.28 includes the improvements and bugfixes below.

Bundled application

• UniFi Network 10.4.57

Improvements

• Improved device stability.

Bugfixes

• Fixed an issue where Multicast and Broadcast Blocked didn't work.

UniFi OS 5.1.26 includes the improvements and bugfixes below.

Bundled application

• UniFi Network 10.4.57

Improvements

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

Bugfixes

• 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.
• 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 the Access application would start when starting the Protect application.

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.

UniFi OS 5.1.12 includes the improvements and bugfixes below.

Bundled application

• UniFi Network 10.3.58

Improvements

• 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.
• Added the ability to revert applications and restore configuration backups.
• Allowed Super Admins to restore local backups.
• Improved the Alarm Manager user experience.
• Improved IDS/IPS performance and CPU utilization.
• Improved multi-WAN failover behavior and resiliency.
• 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 system stability and reliability.
• Improved WireGuard connectivity resiliency.
• Improved compatibility with ISPs that require periodic ARP on the WAN.
• Improved the app restoration experience after a firmware update.
• Improved backup restore resiliency.
• Improved DNS cache responsiveness.
• Improved firmware upgrade behavior by updating the Network Application to the latest official release after an upgrade.
• Improved device discovery and overall device stability.
• [UDR7|UDR5G] Added support for 6 GHz in Ukraine.
• [UDR7] Improved SFP connectivity.
• [UDR7] Improved egress rate limiting accuracy.
• [UDR] Improved WiFi stability.
• [UDR5G] Improved 5G stability.

Bugfixes

• Fixed the security issues mentioned in Security Advisory Bulletin 064.
• Fixed an issue where QoS configuration was not restored after a PPP interface reconnected.
• Fixed an issue where OpenVPN client disconnection notifications could be inaccurate.
• 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 the 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.
• Fixed an issue where IPsec traffic could be lost.

UniFi OS 5.1.11 includes the improvements and bugfixes below.

Bundled application

• UniFi Network 10.3.58

Improvements

• 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.
• Added the ability to revert applications and restore configuration backups.
• Allowed Super Admins to restore local backups.
• Improved the Alarm Manager user experience.
• Improved IDS/IPS performance and CPU utilization.
• Improved multi-WAN failover behavior and resiliency.
• 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 system stability and reliability.
• Improved WireGuard connectivity resiliency.
• Improved compatibility with ISPs that require periodic ARP on the WAN.
• Improved the app restoration experience after a firmware update.
• Improved backup restore resiliency.
• Improved DNS cache responsiveness.
• Improved firmware upgrade behavior by updating the Network Application to the latest official release after an upgrade.
• Improved device discovery and overall device stability.
• [UDR7|UDR5G] Added support for 6 GHz in Ukraine.
• [UDR7] Improved SFP connectivity.
• [UDR7] Improved egress rate limiting accuracy.
• [UDR] Improved WiFi stability.
• [UDR5G] Improved 5G stability.

Bugfixes

• Fixed an issue where QoS configuration was not restored after a PPP interface reconnected.
• Fixed an issue where OpenVPN client disconnection notifications could be inaccurate.
• 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 the 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.
• Fixed an issue where IPsec traffic could be lost.

This is the initial release for the UDR-5G-Max.

Bundled application

• UniFi Network 10.0.162

Bundled application

• UniFi Network 10.0.162

Improvements

• Improved system stability.
• Improved DHCP resiliency for clients that do not comply with the RFC.

Bugfixes

• [UDR7] Fixed 6GHz connectivity issues.

UniFi OS 5.0.13 includes the improvements and bugfixes below.

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 WAN throughput reporting when having more than 2 WAN interfaces.
• Improved Speed Test stability.
• Updated Traffic Identification signatures.
• [Identity] Renamed Group to Role when the console is managed by Fabric.
• [UDR7] Improved Hardware Offloading.
• [UDR7] Improved WiFi stability.

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 Policy-Based Routing rules were ignored for VPN Client Traffic, causing traffic to route via the wrong WAN interface.
• Fixed an issue where IPv6 addresses didn't show up for WAN interfaces.
• Fixed a WireGuard site-to-site connection issue when using a specific WAN listen address.
• Fixed an OpenVPN connection resiliency issue that could cause reconnection failures during renegotiation.
• [UDR7] Fixed incorrect SFP voltage readings from SFP modules.
• [UDR7] Fixed an issue where SSIDs would stop broadcasting after an AirTime Scan followed by bandwidth changes.

UniFi OS 4.4.11 includes the improvement 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 Alarm Manager.
• Improved IPsec VPN connection stability.
• Improved Remote Access connection resiliency.
• Improved storage mounting resiliency.
• Improved the Alarm Manager Webhook integration for seamless alert delivery to Slack and ServiceNow.
• Improved DNS monitoring resiliency for WAN SLA.
• Improved system stability.
• Improved 2.4GHz client connection resiliency.
• [UDR7] Improved Hardware Acceleration for LAN to LAN traffic.
• [UDR7] Improved WiFi stability.

Bugfixes

• 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 false-positive alerts claiming that the DHCP pool is running out of addresses.
• 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 DDNS didn't function correctly when using dual PPPoE WAN connections.
• Fixed an issue where content filtering didn't apply to specific traffic flows.
• Fixed an issue where changing port settings could result in a gateway configuration error.
• Fixed an issue with WireGuard VPN server when using non-primary WAN interfaces.
• Fixed an issue where RADIUS authentication could fail when using anonymous identity.

UniFi OS 4.4.10 includes the improvement listed below.

Bundled application

• UniFi Network 9.4.19

Improvements

• [UDR7] Improved WiFi stability.

UniFi OS 4.4.9 includes the improvements listed below.

Bundled application

• UniFi Network 9.4.19

Improvements

• [UDR7] Improved WiFi stability.
• [UDR7] Improved system stability when MLO is used.

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 Alarm Manager.
• Improved IPsec VPN connection stability.
• Improved Remote Access connection resiliency.
• Improved storage mounting resiliency.
• Improved the Alarm Manager Webhook integration for seamless alert delivery to Slack and ServiceNow.
• Improved DNS monitoring resiliency for WAN SLA.
• Improved system stability.
• Improved 2.4GHz client connection resiliency.
• [UDR7] Improved Hardware Acceleration for LAN to LAN traffic.

Bugfixes

• 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 false-positive alerts claiming that the DHCP pool is running out of addresses.
• 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 DDNS didn't function correctly when using dual PPPoE WAN connections.
• Fixed an issue where content filtering didn't apply to specific traffic flows.
• Fixed an issue where changing port settings could result in a gateway configuration error.
• Fixed an issue with WireGuard VPN server when using non-primary WAN interfaces.
• Fixed an issue where RADIUS authentication could fail when using anonymous identity.

UniFi OS 4.3.9 includes the 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 support for Alarm Manager.
• 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.
• Added the ability to completely turn off data sharing.
• Improved Flows data accuracy.
• Improved Hostname resolution.
• Improved Incoming Interface listing for Threats.
• Improved system stability.
• Improved DDNS resiliency when a non-primary WAN is used.
• Improved the Admins and Users management user experience.
• Improved Remote Access connection resiliency.
• Improved backup and restore resiliency, including better feedback when a restore fails.
• Improved storage health reporting.
• 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 improvement listed below.

Bundled application

• UniFi Network 9.1.120

Improvements

• Improved device stability.

UniFi OS 4.2.12 adds support for Advanced mDNS options and includes the improvements and fixes listed below.

Bundled application

• UniFi Network 9.0.114

Improvements

• 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 SIEM Server integration.
• Improved WireGuard VPN stability.
• Improved the backup and restore user experience.
• Improved System Logs.
• Improved device stability.
• Improved DHCPv6 WAN stability.
• Improved DS-Lite compatibility.
• Improved storage mounting resiliency.
• Improved WiFi connection stability.
• Improved WiFi configuration resiliency after radar detections.
• [UDR7] Added the ability to configure the FAN in silent mode.
• Requires Network Application 9.1.119 or newer.

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.