The .jar version requires Java to be installed on your system . If you encounter a "Java Exception," ensure your Java environment is up to date .
If you're unable to locate version 2.5.1 specifically, consider downloading the latest version of the Ubnt Discovery Tool from the official Ubiquiti website. Often, newer versions are backward compatible and might offer enhanced features and security. Always refer to the device's manual or Ubiquiti's support resources for the most accurate and up-to-date information. ubnt discovery 251 download link
Because Ubiquiti frequently updates their site structure, the most reliable direct path as of this writing is: Often, newer versions are backward compatible and might
Ubiquiti has moved toward integrated discovery within the UniFi Design Center , WiFiman , and the Chrome Browser Extension . How to Get the Ubiquiti Discovery Tool How to Get the Ubiquiti Discovery Tool