Ubiquiti UAP-AC-IW Access Point Firmware 6.6.73.15340

Improvements:

- Improved WPA2/WPA3 roaming for WPA3 clients.
- Reduced excessive logging for clients connected to Hotspot Portal.
- [Gen2] Improved firmware update resiliency.
- [Gen4] Improved meshing stability on DFS channels.
- [Gen4/Gen6] Improved device stability by fixing kernel crashes.
- [Gen5] Improved overall stability.
- [Gen5] Improved meshing stability on DFS channels.
- [Gen6] Improved DFS Radar detection to reduce false positives.
- [U6-Enterprise/U6-Enterprise-IW] Improved 6GHz channel selection after an RF Environment Scan.
- [U6-Lite] Improved 2.4GHz RF Environment Scan accuracy.

Bug Fixes:

- Fixed excessive logging because of app crashes (lldpd) when certain clients are connected.
- Fixed APs going into an Adoption Failed state when the Network Application host (console) IP address changes.
- Fixed false-positive "Multiple devices are using the same IP address" alerts.
- Fixed false positive Association and Authentication failures reported on the Radios > Connectivity page.
- Fixed APs going into an Adoption Failed state after firmware update in rare cases.
- Fixed kernel crashes to improve overall stability.
- Fixed standalone adopted APs sending DNS queries for unifi frequently.
- Fixed UAPs on large sites (with 1K+ clients) causing excessive CPU utilization on Network application consoles/servers.
- [Gen2] Fixed 5GHz SSIDs stop broadcasting in rare cases.
- [Gen2] Fixed incorrect signal reporting in rare cases.
- [Gen2] Fixed 2.4GHz radio broadcasting at 20MHz when configured at 40MHz and the channel is set to Auto.
- [Gen2/Gen3/Gen6] Fixed RF Environment scan 5GHz results not being populated if the scan is initiated during the DFS CAC (e.g. right after the AP boots).
- [Gen4/Gen5] Fixed clients occasionally connecting at low rates/narrower bandwidth than expected.
- [Gen4/U6-Lite] Fixed 2.4GHz radio connection instability in busy environments.
- [Gen4/Gen5] Fixed incorrect AP transmit power shown in WiFiman occasionally.
- [Gen4/Gen5] Fixed channel changes occasionally not being applied correctly.
- [Gen5] Fixed clients connecting at a lower bandwidth (e.g. 20MHz) than the broadcasting radio channel width (e.g. 80MHz) in rare cases.
- [Gen6] Fixed DHCP/connectivity issues at 80MHz, especially with Google clients (Chromecast, Google TV, Pixel phones).
- [Gen6] Fixed connectivity issues with legacy Apple clients (e.g. 2015 MacBooks) when a long ESSID is configured.
- [Gen6] Fixed broken 6GHz client connectivity after changing radio settings (e.g. channel, width, transmit power, etc.).
- [Gen4/U6-Lite] Fixed 5GHz radio occasionally not broadcasting.
- [U6-LR] Fixed incorrect RSSI value for clients when using 160MHz.

Known issues:

- Gen6] Maximum transmit power on DFS channels in the United States is set to lower than permitted limits when the AP is configured to broadcast at Auto / High transmit power. This will be resolved in 6.6.56, which will be released to EA and RC in the coming days.

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.