Firmware update: Ubiquiti UniFi UAP / USW 4.0.21.9965

Feb

11

2019

Ubiquiti has released new firmware for its wireless products in the UAP and USW series. With this, various points are tackled again. The version number is fixed at 4.0.21.9965, and provided with the following announcement and list of adjustments:

[FIRMWARE] 4.0.21.9965 for UAP / USW has been released Stable

We’ve prepared firmware 4.0.21.9965. Please see below for the changelog and links to the firmware binaries. Note that all 1st gen UAPs (UAP, UAP-LR, UAP-OD, UAP-OD5, UAP-OD +, UAP-IW, UAP-Pro, UAP v2, UAP-LR v2) were skipped for this stable release.

Firmware changes since 4.0.15:
[UAPG2] Improve latency in high traffic installations.
[HD / SHD / XG / BaseStationXG] Improve stability.
[HD / SHD / XG / BaseStationXG] Optimize multicast traffic.
[nanoHD / IW-HD] Fix DTIM provisioning issue.
[nanoHD / IW-HD] Fix a bug in TX power provisioning.
[nanoHD / IW-HD] Fix WiFi Experience feature (reported HERE).
[nanoHD / IW-HD] Fix band steering disconnection issue.
[nanoHD / IW-HD] Fix wireless uplink bandwidth mismatch issue.
[nanoHD / IW-HD] Fix displayed RX rate issue (reported HERE).
[nanoHD / IW-HD] Fix available channel list for China.
[nanoHD / IW-HD] Fix fast-apply issue with changing channel width.
[nanoHD / IW-HD] Fix data forwarding issue when client STA roams from wired AP to a wireless uplinked AP.
[IW-HD] Fix wired 802.1X Auto mode.
[UAP] Tweak Wi-Fi Experience scoring.
[UAP] Improve wireless uplink loop detection feature.
[UAP] Fix a bug that may cause MAC ACL and bandsteering to conflict in certain configurations.
[UAP] Fix uplink detection function.
[UAP] Fix ifindex reporting via SNMP.
[UAP] Fix the VLAN provisioning bug in 4.0.18.
[UAP] Properly isolate dynamic VLANs.
[UAP] Security improvement for guest authentication. *
[XG6POE] Improve PD auto detect.
[XG6POE] Fix PoE issue that may occur on device reboot (reported HERE).
[USW] Fix various bugs causing WiFi clients to show as wired once disconnected from WiFi network (reported HERE).
[HW] Fix CVE-2019-5747.
[HW] Miscellaneous bug fixes and improvements.
* Controller support pending.

SPECIAL NOTE about 1st GEN UAPs:
If your 1st gen UAPs are running 4.0.21, and they’re working for your needs, then you can leave those devices on 4.0.21. There is no need to revert. We just want to fix a few bugs since the switch to LEDE framework.
Downloads:
* UAP-AC-Lite / LR / Pro / EDU / M / M-PRO / IW / IW-Pro
* UAP-HD / SHD / XG / BaseStationXG
* UAP nanoHD / IW-HD
* USW
* US-L2-POE
* US-16-XG
* US-XG-6POE
* USW-Multi

Version number 4.0.21.9965
Release status Final
Website
Ubiquiti Networks Community
Download
https://community.ubnt.com/t5/UniFi-Updates-Blog/FIRMWARE-4-0-21-9965-for-UAP-USW-has-been-released-Stable/ba-p/2661313
License type Freeware

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