Ubiquiti UniFi Firmware Release Notes: 3.9.27.8537-4.0.21.9965

Sorting out all the different software releases from Ubiquiti can leave one in a bit of a tizzy (or at least it did me at first). Essentially things break down like this:

  • Most UniFi Equipment (APs, switches) – gets the general firmware release
  • UniFi Cloud Controller – this is the control software, the other software is installed on the individual devices, this is the management UI you use
  • UniFi Security Gateways – get their own firmware
  • UniFi Cloud Keys – get their own firmware, which is oftentimes just an update to the cloud controller software

Official Release Notes

Since 4.0.15

  • UAPG2
    • Improved latency in high traffic installations
  • HD/SHD/XG/BaseStationXG
    • Improved stability
    • Optimized multicast traffic
  • nanoHD/IW-HD
    • Fixed DTIM provisioning issue
    • Fixed a bug in TX power provisioning
    • Fixed WiFi Experience feature
    • Fixed bandsteering disconnection issue
    • Fixed displayed RX rate issue
    • Fixed available channel list for China
    • Fixed fast-apply issue with changing channel width
    • Fixed data forwarding issue when client STA roams from wired AP to wireless uplinked AP
  • IW-HD
    • Fixed wired 802.1X Auto Mode
  • UAP
    • Tweaked Wi-Fi Experience scoring
    • Improved wireless uplink loop detection
    • Fixed bug that might cause MAC ACL and bandsteering to conflict
    • Fixed uplink detection function
    • Fixed ifindex reporting via SNMP
    • Fixed VLAN provisioning bug introduced in 4.0.18
    • Properly isolated dynamic VLANs
    • Security improvements for guest authentication
  • XG6POE
    • Improved PD auto detect
    • Fixed PoE issue which may occur on reboot
  • USW
    • Fixed multiple bugs causing WiFi clients to show as wired once disconnected from WiFi network
  • HW
    • Fixed CVE-2019-5747
    • Misc

Since 4.0.14

  • HD/SHD/XG/BaseStationXG
    • Fixed some IE corruption (related to wildcard and uplink SSIDs)
  • nanoHD/IW-HD
    • Tweaked performance
  • HW
    • Misc.

Since 4.0.10

  • HD/SHD/XG/BaseStationXG
    • Fixed handled of IEs so wildcard SSIDs don’t cause memory corruption.
    • Resolved an illegal memory access when bonding enabled
  • XG/BaseStationXG
    • Enabled multi-radio wireless uplink
  • HD/SHD
    • Enabled VHT160 support
  • nanoHD/IW-HD
    • Fixed downlink staying disconnected after channel change or reboot when uplink using DFS channels
    • Fixed ADDBA Request loop triggered by some client STAs
    • Fixed dynamic VLAN with Fast Roaming issue
  • UAPG2
    • Fixed physical reset function
  • UAP
    • Fixed channel 14 support
    • Fixed issue where all downlink APs are disassociated when one donwlink detects a network loop
  • USW
    • Added alert temperature to environment stats
  • HW
    • Fixed an adoption issue which could occur after known device is reset to factory defaults
    • Misc.

Since 3.9.54

  • UAPG3
    • Fixed BLE support.Fixed a node leak.Fixed a bug here AP may wrongly kick a client STA when “on other VAP” occurs.Fixed a bug in uplink that would cause downlink to hang after channel change.Fixed inter-VLAN communication issue.Fixed and improved wireless uplink support.Fixed bug causing RF scanning to return incorrect results.
  • UAPG3/G2
    • Enabled VHT40/80 support for Japan.Switched to LEDE framework.Implemented upgraded authenticator.Fixed Fast Roaming support.Fixed Cell Size Tuning Support
  • UAPG2
    • Fixed a bug where downlink was disconnected when uplink AP changes channels.
  • HD/SHD/XG/BaseStationXG
    • Fixed and improved Hotspot 2.0 support.
  • SHD/XG/BaseStationXG
    • Enabled Rogue AP scanning on security radio.
  • XG/BaseStationXG
    • Fixed reported 10Gbps PHY rate.
  • BaseStationXG
    • Enabled LED bar and OLED display support.
  • nanoHD/IW-HD
    • Added client ‘Framed-IP-Address’ to RADIUS accounting data.
    • Improved 802.11k scanning.
    • Improved Ethernet stability.
    • Improved Fast Roaming support.
    • Fixed a bug which caused bandsteering to fail to initialize.
    • Fixed instability caused by enabling WLAN scheduling.
    • Fixed throughout issue for clients with certain Intel wireless cards.
    • Fixed wireless adoption issue.
    • Fixed a memory leak.
    • Fixed multiple downlink support.
    • Fixed wrong passphrase issue that some client STAs encountered.
    • Fixed mDNS packets being dropped by IGMP snooping.
    • Fixed bandsteering support when WLAN scheduling enabled.
    • Fixed bug causing instability when netconsole was enabled.
    • Fixed bug which caused some SSID(s) not to broadcast.
    • Fixed a bug in bandsteering.
    • Fixed issue with wireless adoption when in factory default state.
    • Fixed wireless uplink VLAN broadcast/multicast packets format error.
    • Fixed SSDP dropped by IGMP snooping.
    • Fixed bug causing a drop in transmit performance.
    • Fixed RF scanning support.
    • Fixed support for 8 SSIDs per radio.
    • Fixed bug which may cause an AP to stop forwarding packets when configured to use wireless uplink.
    • Fixed bug when using VLANs in a wireless uplink topology.
    • Stability improvements.
  • IW-HD
    • Added wired RADISU MA auth & DVLAN support.
    • Added wired 802.1X fallback VLAN support.
    • Added support for controlling PoE passthrough.
    • Enabled cell size tuning support.
    • Fixed 802.1X automode.
    • Fixed bug in wired 802.1X support.
    • Fixed wireless uplink support while in factory default state.
  • EDU
    • Uses new package manager for EDU SIP.
  • UAP
    • Enabled fast-apply support for minRSSI.
    • Silenced unnecessary LLDP log spam.
    • Fixed false MAC filter rejection anomalies in the controller.
    • Improved wireless uplink loop detection to fix disconnect issues.
  • USW
    • Added more DHCP snooping statistics to CLI output.
    • Increased local syslog size.
    • Now forwards IGMP report packets only on ports with LLDP remote entry.
    • Fixed bug causing issues with DHCP in some environments.
  • USXG6POE
    • Improved PD compatibility.
  • HW
    • Fixed DHCP option 43 support.
    • Fixed false ‘Decrypt Error’ events and improved logging.
    • Security improvement.
    • Miscellaneous bug fixes and improvements.

Since 3.9.42

  • UAPG3
    • Fixed bandsteering when using channel 144.
    • Fixed IP endianness issue.
    • Fixed DPI blocking support.
  • UAPG3/G2
    • Added advanced guest isolation support.
    • Added simple DNS tracking for client STAs to syslog.
    • Fixed leak which caused provisioning/upgrade issues (“Timeout waiting for OL vap X to stop” in syslog).
    • Fixed 802.1X identity not working when Fast Roaming was enabled.
  • XG/BaseStationXG
    • Added multi interface uplink support.
  • BaseStationXG
    • Enabled OLED display support.
  • nanoHD/IW-HD
    • Added 802.11k and 802.11r support.
    • Added support for minimum PHY rate control.
    • Improved wireless uplink stability.
    • Updated 802.11k scan policy.
    • Enhanced bandsteering and set daemon to 802.11v BSS Transition Management (BTM) only mode.
    • Fixed client STA can’t connect after WLAN schedule executed.
    • Fixed bug which caused default SSIDs to broadcast in some cases.
    • Stability and performance improvements.
  • IW-HD
    • Added DFS support.
    • Added wired 802.1X support.
    • Fixed an issue with client STA roaming.
    • Fixed scheduling while atomic bug which caused the management daemon to crash.
  • UAP
    • Added loop detection to wireless uplink.
    • Fixed a bug in RADIUS MAC Auth provisioning.
    • Fixed throughput drop.
    • Fixed bug with rate limiting support.
    • Fixed bug which allowed fast roaming to be enabled on SSIDs that are either open or using WEP.
    • Reduced uplink-monitor log spam.
  • USW
    • Fixed false RX Fault errors showing on some UF-RJ45-1G modules.
    • Fixed SNMPv3 fast-apply fail due to special characters in password.
    • Fixed switch LAG link failed bug.
    • Fixed a memory leak.
    • Fixed false alerts when fan running at low duty.
    • Fixed SSDP forwarding issue.
    • Fixed false overheating alerts.
    • Fixed LAG port LED off issue.
  • HW
    • Improved firmware update error code reporting.
    • Fixed device inform issue with DNS resolving to wildcard IPs.
    • Miscellaneous bug fixes and improvements.

Since 3.9.27

  • USW
    • Fixed RADIUS server provisioning.
    • Added Port Security and MAC ACL support.
    • Added 802.1X guest VLAN support.
    • Restarts DHCP client after a port is up.
    • Fixed LAN client stats when using LACP/LAG.
    • Fixed issue with default VLAN not working when using MAB.
    • Fixed ability to toggle flow control.
    • Disabled SNMP by default.
    • Reduced max VLANs to 255 (default), which lowers memory use by ~10%.
  • HW
    • Added URL support for DHCP option 43.
    • Several fast-apply provisioning improvements.
    • Unified several modules across various UniFi platforms (UAP, USW, USG).
    • Various bug fixes and improvements.

Since 3.9.24

  • UAPG3
    • Fixed crash when 802.11r enabled.
    • Reverted patch which disabled secondary ethernet when using wireless uplinks.
  • UAPG3/G2
    • Improved channel utilization reporting accuracy.
  • UAPG2
    • Improved performance.
  • HD/SDH/XG
    • Fixed issue with reported uplink interface after RF scan when bonding is enabled.
    • Fixed 802.1X VLAN reporting when RADIUS VLAN enabled.
    • Increased ntp client update frequency.
    • Improved client STA performance for SSIDs with DVLAN enabled.
    • Removed unnecessary logging.
  • SHD/XG
    • Fixed performance issue.
  • XG
    • Reenabled auto-negotiation on the 10GbE PHY.
  • nanoHD
    • Reenabled auto-negotiation on the 10GbE PHY.
    • Added channel utilization counters.
    • Added DTIM support.
    • Added initial bandsteering support.
    • Added athstats tool.
    • Added broadcast filtering support.
    • Enabled DFS support.
    • Fixed broadcast filter configuration.
    • Fixed hidden SSID support.
    • Fixed a crash triggered by provisioning.
    • Fixed a bug causing SNMP hostname to disappear after provision and reboot.
    • Fixed PMF support.
    • Various stability improvements.
  • UAP-Pro
    • Removed bandsteering (isn’t supported).
  • UAP
    • Disabled the DS fast BSS transition.
    • Fixed management VLANs on downlink UAPs.
    • Fixed bug which caused 100% CPU use when fast BSS transition enabled.
    • Various wireless uplink changes, including adding multi-radio uplink support.
    • Tracks MAC filter rejections.
    • Various bug fixes and improvements.
  • USW
    • Fixed crash caused by autodetect.
    • Adjusted MAB priority, no longer waiting for 802.1X timeout to process.
    • Fixed port mirror provisioning.
    • Added switch PoE port overload and disconnect reporting.
    • Various bug fixes and improvements.
  • HW
    • L3 adoption and management improvements.

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.