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Prerequisits

  • STM32 Cube Programmer should be installed

https://www.st.com/en/development-tools/stm32cubeprog.html

  • Windows Driver Kit should be installed

https://docs.microsoft.com/en-us/windows-hardware/drivers/download-the-wdk

  • an RFID reader should be connected

  • a USB A to micro-USB cable should be connected

Process

Notes

  • The Firmware Updater Tool retains the original Application Key for each device. Thus, if the device will continue communicating with the same Gateway, then there is no need to update the device credentials within the Gateway.

Photos of opening a device

Problems and Possible Solutions

  • If flashing fails, try plugging the USB into a powered USB hub

  • If flashing fails, try a different USB cable

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