MLR003 Firmware Update Tool

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

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

• An RFID reader should be connected

  • ACS ACR1252U preferred with appropriate drivers

  • https://www.identible.de/acs-acr1252u-usb-nfc-reader.html

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

Open

Open

Problems and Possible Solutions

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

• If flashing fails, try a different USB cable