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* know the COM port number of your device
* terminal program OR small screw driver
* [https://www.st.com/en/development-tools/stm32cubeprog.html STM32CubeProgrammer] OR [https://login.siliconradar.com STM32Flash] tool and [https://login.siliconradar.com flash script] configured for SiRad Simple
== Set device into programming mode ==
Requirements:
* [https://login.siliconradar.com STM32Flash] tool and *[https://login.bat file siliconradar.com flash script] with settings for SiRad Simple
* STM32Flash tool extracted to some folder on your harddisk
* firmware and *.bat file flash script placed in the same folder as STM32Flash tool
* know the COM port number of your device
Open the flash script (*.bat file ) for editing in a text editor. Check the name of the firmware (*.bin file) and change it to match the firmware that you want to flash. Check the COM port number and change it to match your devices COM port number. Do not change any of the other settings. Save and close the *.bat file. Now execute the *.bat file. A command line window should appear telling you the flash progress. It should take some minutes to flash the firmware. The window should close automatically when the flash process is finished. The LED of the device will start blinking as usual.
<b>Trouble shooting:</b> If the flash progress is not shown or the command line window opens only very shortly, the flash tool could not flash the device. Please check again the name and COM port in the *.bat file and make sure that no other tool still uses the COM port.
