Ubiquiti R5AC-Lite System Firmware 8.5.4.37936 Download

Posted at December 25, 2024 by PCI-DB Team

Ubiquiti R5AC-Lite System Firmware 8.5.4.37936 Description

Important:

- We highly recommend using WEB UI rather than TFTP for upgrading to v8.5.4 from older firmware
- Maximum supported CPE/Station count for the new TDD Framing Flexible (NEW) mode is 60

New:

- New: A new TDD Framing Flexible (NEW) mode for 20/40MHz. The old flexible mode remains and it is renamed to Flexible (legacy). v6.1.7 required for the Flexible (NEW) mode
- New: TDD Framing/GPS Sync support for 10MHz with 8ms 67/33 and 10ms 67/33 DL/UL Ratio options in AP PtMP airMAX Mixed mode (v6.1.7 required)
- New: IPV6 addresses support in the Ping tool
- New: Daylight Saving Time support
- New: Improved First Login page: added options to upload backup configuration and change default Username/Password
- New: ULink, UNMS, UCRM icons on Login page
- New: Keyboard shortcuts. To view a full list of available shortcuts in airOS WEB UI, press "?"
- New: LiteBeam 5AC 16 120 model name change to LiteAP AC
- New: PrismAP antennas name change to Horn
- New: UNMS agent upgrade to v0.3.12
- New: Updated EULA and Privacy Policy agreements
- airMAX-ac FF: Introducing 10ms duration with 75/25, 67/33 and 50/50 DL/UL Ratio options
- airMAX-ac FF: Improved clients connection in TDD Framing Fixed and Flexible (NEW) modes
- airMAX-ac FF: GPS Sync is set always On when Fixed mode is selected on devices with GPS (GPS Sync setting is removed from Web)
- airMAX-ac FF: Station can't establish connection with AP

Improvements:

- Dashboard visual improvements
- Antenna Alignment tool visual improvements
- airOS stability improvements

Fixes:

- Fix: Make DHCPv6 Unique Identifier (DUID-UUID) permanent
- Fix: Fast restart for Sensitivity Threshold setting
- Fix: Impossible to clear up Lock To AP Mac field when old configuration key is present in system configuration
- Fix: VHT10 calculated distance fix

WEB UI:

- WEB UI: Show SSID in the Link view on Dashboard
- WEB UI: Show link's security in the Link view on Dashboard
- WEB UI: Rename 1x1 to SISO and 2x2 to MIMO in the Data Rate diagram on Dashboard
- WEB UI: Return back GPS signal quality indicator on Dashboard
- WEB UI: Show warning on distance limitations when changing wireless mode, channel width and TDD framing duration in Wireless page
- WEB UI: Show warning on clients number limitations when changing wireless mode, channel width and TDD framing duration in Wireless page
- WEB UI: Show all DHCP interfaces in device's DHCP Client tab
- WEB UI: Show Station IP from remote stats
- WEB UI: Open remote device WEB UI link when clicking on remote device label
- WEB UI: Show MAC address of remote device in Antenna Alignment tool
- WEB UI: Show aggregated Best signal per chain in Antenna Alignment tool
- WEB UI: Show suggested Elevation for local device calculated according to locals/remote heights in Antenna Alignment tool
- WEB UI: Show warning when coordinate-based and propagation-based link's distances do not match
- WEB UI: Link View displays coordinate-based "Distance" in case coordinates are set on both sides
- WEB UI: Metrics selected in Link view should be applied for distances in Map/Fresnel views and Height setting
- WEB UI: Fix LAN IPv6 configuration load
- WEB UI: Fix LAN IPv6 Preferred DNS validation
- WEB UI: Fix Enter key issues in Speed Test tool
- WEB UI: Fix Station List sorting by Distance
- WEB UI: Remove Distance slider for Flexible (NEW) and Fixed modes
- WEB UI: Remove the "" next to 30MHz and 60MHz in the Channel Width list
- WEB UI: Some SSID special characters were displayed improperly on Dashboard
- WEB UI: Remove remote device GPS coordinates if remote device is not sending them
- WEB UI: Dashboard reports wrong remote CPU load
- WEB UI: False indication of signal difference per chain on Dashboard for SISO devices
- WEB UI: RX Signal Too High indication is missing on Dashboard
- WEB UI: Users created manually are overwritten after saving the configuration
- WEB UI: Closing AirView with esc key
- WEB UI: Display U logo for devices that have no picture on Dashboard
- WEB UI: Make SSID text box wider
- WEB UI: Various small UI improvements

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.  

  It is highly recommended to always use the most recent driver version available.

Try to set a system restore point before installing a device driver. This will help if you installed an incorrect or mismatched driver. Problems can arise when your hardware device is too old or not supported any longer.

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