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By default, our Lyra DVKs ship completely empty and erased with no bootloader and no application. Before getting started, please make sure to first program a bootloader and application image on your Lyra DVK.
All Lyra modules ship pre-programmed with our own Ezurio (formerly Laird Connectivity) bootloader type / configuration and a factory application. The bootloader enables firmware programming via Serial DFU (UART) on modules reset by triggering the BOOT pin and the factory application can be used to upload firmware over-the-air (OTA) via BLE for certain software options.
Please refer to our latest Lyra Series − Firmware Options and Upgrading User Guide document for more details about all available software options and firmware upgrade methods.