Ubiquiti UAP-AC-LR Access Point Firmware 4.0.42.10433

Firmware changes since 4.0.30:

- [UAPG2/G3] Fix corrupt UBNT IEs.
- [UAPG2/G3] Handle broadcast DHCP replies properly while using dynamic VLANs.
- [UAPG1/G2] System optimizations.
- [UAPG2] Fix 100FDX negotiation issue after wired uplink state change.
- [UAPG2] Fix downlink AP crash when using a DFS channel for wireless uplink.
- [UAPG2] Fix wireless uplink priority selection fail.
- [UAPG1] Fix Ethernet negotiation.
- [UAPG1] Fix issue causing no Ethernet link when link partner uses manual negotiation.
- [UAPG1] Fix remaining issues with establishing an Ethernet link.
- [AC-Pro/EDU/M-Pro] Fix performance regression in 4.x when uplink is 100Mbps.
- [HD/SHD/XG/BaseStationXG] Fix mDNS leak when Broadcast and Multicast Filter enabled.
- [HD/SHD/XG/BaseStationXG] Fix reset button behavior.
- [HD/SHD/XG/BaseStationXG] Stability and compatibility improvements when using `Auto-Optimize Network` or `High Performance Devices`.
- [HD/SHD/XG/BaseStationXG] Update kernel.
- [HD/SHD/XG] Fix bug causing lower than expected MCS and throughput when TX power >=25dBm.
- [BaseStationXG] Fix GPS support.
- [nanoHD/IW-HD/UDM-B] Add association tracking support.
- [nanoHD/IW-HD/UDM-B] Add support for `High Performance Devices` (also part of `Auto-Optimize Network`).
- [nanoHD/IW-HD/UDM-B] Add support to display which client STAs support Fast Roaming.
- [nanoHD/IW-HD/UDM-B] Enable client STA keepalive support.
- [nanoHD/IW-HD/UDM-B] Fix 802.11w (PMF) provisioning.
- [nanoHD/IW-HD/UDM-B] Fix a crash when running RF Environment scanning.
- [nanoHD/IW-HD/UDM-B] Fix a null pointer access issue.
- [nanoHD/IW-HD/UDM-B] Fix AndesSendCmdMsg warnings.
- [nanoHD/IW-HD/UDM-B] Fix downlink AP TX rate degradation issue.
- [nanoHD/IW-HD/UDM-B] Fix false anomalies/failures.
- [nanoHD/IW-HD/UDM-B] Fix some memory leaks.
- [nanoHD/IW-HD/UDM-B] Fix speed regression caused by unaligned access.
- [nanoHD/IW-HD/UDM-B] Fix TX retry and drop count.
- [nanoHD/IW-HD/UDM-B] Fix wireless uplink packet forwarding issue.
- [nanoHD/IW-HD/UDM-B] Improve multi-client performance.
- [nanoHD/IW-HD/UDM-B] Stability improvements.
- [nanoHD/IW-HD/UDM-B] System optimizations.
- [nanoHD/IW-HD/UDM-B] Tweak WiFi Experience scoring.
- [UDM-B] Disable RF Environment scanning as it's unsupported.
- [UAP-IW] Fix behaviour so ports are switched instead of isolated.
- [UAP-IW] Fix link flapping and switch VLAN behavior.
- [UAP-IW] Fix port/management VLAN provisioning.
- [UAP-IW] Fix reported inittab respawn errors.
- [UAP] Add DFS backup channel feature.
- [UAP] Add initial RFC-5176 support.
- [UAP] Add U-NII-2C support for Panama country code.
- [UAP] Fix a bug which causes mcad to be removed unexpectedly after a provision.
- [UAP] Fix a bug with guest portal redirection.
- [UAP] Fix and improve User Groups support.
- [UAP] Fix Apple Watch support when using `Auto-Optimize Network` feature.
- [UAP] Fix connectivity issue for 2.4GHz only devices when using `Auto-Optimize Networks` or `High Performance Devices`.
- [UAP] Fix false `Blocked by access control` anomalies.
- [UAP] Fix false DHCP timeout/failure anomalies.
- [UAP] Fix incorrect/lower than expected 2.4GHz TX power limits.
- [UAP] Fix issues when multiple guest networks on an AP.
- [UAP] Fix RADIUS failover behavior.
- [UAP] Fix RF Environment scanning bug which caused APs to require a power cycle after running a scan.
- [UAP] Improve client STA compatibility when using `High Performance Devices` (also part of `Auto-Optimize Networks`).
- [UAP] Regulatory updates for Russia.
- [U-LTE] Disable RF Environment scanning as it's unsupported.
- [USW] Fix timeout issue when provisioning 200+ VLANs.
- [UIS] Improve PD compatibility.
- [USW-Pro/XG-6POE] Add initial routing support.
- [USW-Pro/XG-6POE] Add LCM brightness/sync support.
- [USW-Pro/XG-6POE] Change throughput update interval on LCM to 1 second.
- [USW-Pro/XG-6POE] Fix a bug that may cause the in-row SFP port to disable when setting an Ethernet port to Disabled.
- [USW-Pro/XG-6POE] Fix a rare bug in LCM initialization during boot.
- [USW-Pro/XG-6POE] Further improvements to PD autodetection.
- [USW-Pro/XG-6POE] Improve handling when no uplink detected.
- [USW-Pro/XG-6POE] Improve PoE reliability.
- [USW-Pro/XG-6POE] Improve reliability of LCM sync feature.
- [USW-Pro/XG-6POE] Tweak LCM touch event behaviour.
- [USW-Flex] Fix a bug which may prevent device from booting.
- [USW-Flex] Improve device initialization reliability.
- [US8] Disable IPv6 on VLAN interfaces.
- [USW] Add Wired User Experience support.
- [USW] Fix 10/100Mbps manual negotiation.
- [USW] Fix false PoE overload events.
- [USW] Fix SNMPv3 data leaking without auth.
- [USW] Improve Fault Status text when checking PoE info via shell.
- [SEC] Fix CVE-2019-8912.
- [HW] Fix alerts generated when inittab restarts a process.
- [HW] Fix STUN URL resolution.
- [HW] Fix support for Custom Upgrades via FTP.
- [HW] Miscellaneous bug fixes and improvements.

Notes:

- You may start to see EVT_AP_RestartProc events in the controller log. If you see these, please report if there is anything specifically in your setup that triggers the events. The processes restarting is not new, but the reporting of the restarting is, and we are using these reports to clean up these issues.
- US-XG-6POE upgrading from 4.0.2 or earlier will take a long time to upgrade. Don't be surprised if your switch is unavailable for 5-10+ minutes as 4.0.3+ also updates the PoE firmware to improve PD compatibility.
- UIS-8-450W upgrading from 4.0.33 and earlier will have their PoE firmware upgraded automatically to improve PD compatibility. That process will take a few minutes. PoE will be unavailable during the upgrade process.
- 1st gen UAPs may require extra steps when upgrading from firmware 4.0.3. You can try disabling all WLAN groups, and then running the upgrade. Devices that are seemingly "stuck" on 4.0.3 may require TFTP recovery to upgrade from that firmware.
- All supported 1st gen APs need to be on a minimum of 4.0.10 prior to upgrading to this firmware. Controller 5.10.3+ will force an upgrade to 4.0.10 prior to upgrading to this release (only if your device isn't running 4.0.10 already).

Known Issues:

- UAP, UAP-LR, UAP-IW, UAP-OD and UAP-OD5 cannot be downgraded from firmware 4.0.17+ to an earlier release.

About Access Point Firmware:

If you update the Access Point (AP) firmware, your device can benefit from changes that fix multiple issues encountered by wireless clients, correct different user interface problems, add various functionalities, and include support for newly developed protocols.

Before performing this task, we recommend that you read and understand all the installation steps, because there are many AP models and manufacturers available. Each producer strives to make the procedure as simple as possible, but there are cases when it's anything but that.

It is also advisable that you apply a new access point firmware in a steady power environment (UPS unit will satisfy this need), using an Ethernet cable rather than a wireless connection. The latter can be easily interrupted.

With this in mind, if you wish to apply this version, click the download button and install the package on your access point. Remember to check back with our website as often as possible so that you don't miss a single new release.