RF-Flasher utility (specifically the STSW-BNRGFLASHER package) is a standalone PC application developed by STMicroelectronics
Automation: It allows for scripting flash operations via a Windows DOS shell, which is essential for manufacturing lines. rf flasher utility
Execute: Use the graphical interface to perform the desired action, such as "Mass Erase" followed by "Program". Application Firmware: The main operational code
It communicates exclusively via the Serial Boot Loader (SBL) protocol over UART (Universal Asynchronous Receiver-Transmitter) or USB CDC (Communication Device Class) virtual COM ports. Crucially, it does not require a JTAG/SWD debugger like an XDS110 or J-Link. You only need a USB-to-TTL serial adapter (e.g., FTDI, CP2102) connected to the chip’s RX/TX pins. It communicates exclusively via the Serial Boot Loader
