Nrf_sniffer_for_bluetooth_le_4.1.1
With these values in hand, the sniffer synchronizes with the master and slave. It hops channels right alongside your devices, decrypting the timing and allowing you to see the entire conversation—from the initial handshake to the data exchange.
If the sniffer isn't appearing, use the command nrfutil install ble-sniffer to ensure all necessary tools are initialized. nrf_sniffer_for_bluetooth_le_4.1.1