Nrf_sniffer_for_bluetooth_le_4.1.1 [exclusive] Jun 2026

While Nordic has since released newer versions (including the 4.2.x and 5.x branches), version 4.1.1 is notable for its stability and compatibility with certain legacy setups. Here are its core features:

This is the feature that saves hours of development time. In previous iterations or cheaper sniffers, following a connection as it jumped channels (hopping) was difficult. The nRF Sniffer automatically detects when a device initiates a connection. It immediately grabs the and CRC Init values from the "CONNECT_REQ" packet. nrf_sniffer_for_bluetooth_le_4.1.1

Compatible third-party hardware like the Raytac MDBT50Q-CX-40 dongle also works with this firmware. 🚀 Installation Step-by-Step 1. Flash the Sniffer Firmware While Nordic has since released newer versions (including

If your peripheral device is advertising but the central (like a smartphone) won't connect, the sniffer can show you the . You might find that the "Connection Interval" requested by the central is rejected by the peripheral, leading to an immediate disconnect. Analyzing Throughput and Latency The nRF Sniffer automatically detects when a device