The ST BlueDFU application manages the Over The Air (OTA) Device Firmware Upgrade (DFU) of the STEVAL-WESU1 through Bluetooth low energy (BLE) connectivity or any other system that supports the ST OTA Bluetooth low energy protocol. The ST BlueDFU app searches for available Bluetooth LE nodes in the vicinity and returns certain information for each discovered node, including BLE name, address and signal strength (TX power and RSSI). Clicking on a node forces an attempt to connect to the node and