Here’s a technical write-up for the phrase — written as if for a network admin or support documentation context.
For XW (AR934x) devices, it may be: XW.v1.255.141210.1902.bin --- Upgrade Firmware Version 1-255 Ubnt Download
: Most modern UniFi and EdgeOS devices can be updated via the web interface. In UniFi, navigate to Settings > System > Updates . In EdgeOS, updates are managed under the System tab at the bottom of the screen. "Upgrade Firmware Version 1-255 Ubnt Download" Here’s a
Search for your model and select the desired firmware version. --- Upgrade Firmware Version 1-255 Ubnt Download