Ubiquiti PBE-5AC-400 Bridge Firmware 8.7.0.42152

Major changes:

- PTP performance improvements and reduced CPU load on higher channel widths. Up to 40% improvement for pure PTP 80MHz bridge. For max performance enable PTP bridge mode, make sure VLANs & bridge firewall aren't used and leave MTU at default 1500 bytes.
- Simplify airMAX mode configuration: airMAX AC-only mode fully replaced with airMAX mixed mode.
- Introduce flex-new 10MHz option (beta).
- Improve device stability when handling huge amounts of connections.
- Faster scan when auto channel width option is enabled on station.
- DFS prescan feature on access points. It utilizes the secondary radio for DFS detection. DFS prescan is automatically started on system boot after management radio timeout. It runs for 10-30 minutes and waits for CAC (Channel Availability Check) time on each DFS channel. Frequencies, where no radar events are detected during the CAC wait, are marked in the wireless settings frequency list. This iteration of the DFS prescan feature is informational only - device does not act on the collected information yet.

Known issues:

- WebUI: Due to PTP performance optimizations LAST IP column in the station list shows "unknown" for airMAX M clients. Will be fixed with the next airMAX M release.

Regulatory updates:

- DFS algorithm improvements.
- Update frequency plan for Indonesia according to PM 1-2019: removed 2474MHz.
- Update frequency plan for Kenya.

Security Fixes:

- Dnsmasq patched for CVE-2019-14513

Fixes:

- Connectivity: Disable scan list if it is configured with invalid frequencies.
- Connectivity: Fix issue where AP can stop receiving traffic when antenna gain is changed.
- Connectivity: Fix site survey when radio is configured for the "Licensed" country.
- Connectivity: When auto channel width is enabled, station could connect to AP with lower channel width (for example 20MHz instead of 40MHz).
- System: Also block access via IPv6 when block management access is enabled.
- System: Fix GPS time sync - the GPS chip had a week counter rollover bug.
- System: Fix for fast network reconfiguration. Addresses are not fully flushed from old interface when using DHCP client and adding VLANs.
- System: Improve 2AC stability on system boot with many stations.
- System: Optimize airView spectral daemon memory use.
- System: Remove DynDNS.
- System: Remove MAC-Telnet.
- System: Send a single beacon packet every 30s when disconnected from controller.
- System: Update self-signed HTTPS certificate generation rules to match macOS v10.15 and iOS v13 requirements.
- WebUI: Add warning notification if frequency scan list contains only DFS channels.
- WebUI: Collapsable Wireless Advanced section.
- WebUI: Easier to select target AP in the site survey tool.
- WebUI: Fix for empty discovery tool dialog when device name contains invalid characters.
- WebUI: Fix for missing second Ethernet port information in dashboard details for dual port devices.
- WebUI: Fix for page load issues when accessed over slow connections.
- WebUI: Fix warning when invalid firmware version is uploaded.
- WebUI: Improve "Management radio is enabled" warning - it is now less persistent and more informative.
- WebUI: Improve PTMP throughput charts in dashboard: AP side shows total AP throughput, STA side is split into separate RX/TX charts.
- WebUI: Improve firmware update checking.
- WebUI: Make the DFS wait bar more visible.
- WebUI: Merge auto channel width and manual channel width fields on station.
- WebUI: Move traffic shaping section from advanced to simple network settings page.
- WebUI: Show a notification while support file download is in progress.
- WebUI: Show remote airView spectral data even if local airView is disabled.

About Firmware Updates:

Applying a newer firmware version than the one already installed on your unit can bring various enhancements, include workarounds for diverse problems encountered by the device, and improve or add newly developed features.

On the other hand, downgrading the firmware version can recover the device’s functionality in the event of a software update either turning up faulty or causing the unit’s overall performance to drop. However, bear in mind that applying an older firmware isn’t recommended and might not always be possible.

When it comes to the update steps, due to the large variety of devices and numerous ways for installing a new firmware, it is recommended that you carefully read and understand the upgrade steps, and consider applying a different firmware only when you have familiarized yourself with the update method.

As the installation process is most of the times quite risky, this step should be taken by users that have the ability to successfully complete the update; regular users may initiate it at their own risk. Moreover, it’s best that this task be performed in a steady power environment such as the one ensured by a UPS unit.

Therefore, if you consider applying this release, hit the download button, take into account all the aforementioned aspects, and update the device’s firmware. Also make sure you constantly check with our website to ensure that you don’t miss a single new release.