Ubiquity AirOS V Firmware 5.5.4

New:
- New: Data rate module: Alternative data rate algorithm option
- New: WEB UI: Audio option for Antenna Alignment Tool
- New: WEB UI: "Feed only - 3dBi" option for antenna type (AirGrid and NanoBridge models only)

Improvements:
- airMax: Improved performance in PtMP scenarios
- airMax: Lower latency in Long Range PTP mode
- airMax: Voice performance/latency improvements in PtMP scenarios

- QoS: Map commonly used VoIP TOS values (0x68, 0xb8) to Voice queue

- Speed test: Improved timeout/errors handling and reporting
- TFTP recovery: Reset configuration to factory defaults when executing TFTP recovery mode without need to hold Reset button for 15sec and upload firmware image
- airView: Update certificate

- WEB UI: Show if custom scripts are present on device
- WEB UI: Show signal strength from remote radio in Station information window (airMax mode only)
- WEB UI: Show Station TX/RX bit rate statistics
- WEB UI: Disable WEB UI while airView is running
- WEB UI: Automatically redirect to HTTPS port when running Speed test
- WEB UI: Make MAC addresses in Main page easily selectable
- WEB UI: Add help text for UBNT/Advanced settings pages
- WEB UI: Improved FW update failure messages
- WEB UI: Do not offer to apply configuration changes if there are no any changes made
- WEB UI: Latitude/Longitude setting validation
- WEB UI: Interface Language update: French translations
- WEB UI: Interface Language update: Lithuanian translation

- Stability: Check filesystem on boot
- Stability: Memory leak protection for less than 1MB of RAM
- Stability: HW watchdog in u-boot

Fixes:
- Fix: airMax: Radio is transmitting when operating in airView mode (AP mode only)
- Fix: airMax: Long range PtP mode: AP gets stuck at 81Mbps rate and transmit throughput goes down
- Fix: airMax: Sometimes AP locks up when applying configuration changes (possible fix)
- Fix: airSync: Rocket Titanium airSync Slave doesn't connect to airSync Master
- Fix: airSelect: Default airSelect announce count set to 30
- Fix: airView: airView does not start when Device Name contains comma symbol
- Fix: airView: M900/M3/M365/M6 products does not scan full frequency range
- Fix: Detect Ethernet loopback on defective device and bring Ethernet interface down
- Fix: Sometimes M Series devices hang during reboot (except Titanium)
- Fix: Change Max MTU to 2024 bytes on both Ethernet interfaces
- Fix: Returning from Test mode does not revert some configuration changes
- Fix: Redirection issue when enabling/disabling HTTPS
- Fix: Satellite signal bar is centred under IE
- Fix: During upgrade disable default route if DHCP client is configured
- Fix: DHCP fallback IP isn't set
- Fix: Memory leak in Main page with IE8/IE9 (session timeout implemented)
- Fix: Low power mode fix for newer revisions of NanoStation M5
- Fix: Device discovery issue when DMZ port is enabled
- Fix: Cannot switch from Advanced to Simple Configuration mode when network role is Router
- Fix: Auto Channel does not follow channel plan for Canada (Rocket Titanium)
- Fix: OSPF and other unregistered multicast traffic transmit problems in PtMP
- Fix: Skip EAP security certificate date validation if device date is before certificate start date
- Fix: Do not send discovery/ARP requests through bridge ports
- Fix: Enable busybox option to prefer IPv4
- Fix: UPnP: Router should accept "PORT FORWARD" requests from LAN side only
- Fix: Sometimes station can't associate when switching from open to WPA security
- Fix: Enable DFS when choosing country Austria
- Fix: Disable "Block Management" option for WAN in default configuration (AirRouter, AirRouter HP, PowerAP N)

Regulatory updates:
- Enable DFS for Germany upper band (5.8GHz) channels
- Update New Zealand allowed frequencies for 5GHz
- Update Chilean allowed frequencies for 5GHz