Data Sheet

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LGT-92 LoRa GPS Tracker User Manual 15 / 29
4. Upload Firmware
User can use the LGT-92’s USB port to upgrade firmware into it. The hardware connection for
upgrade firmware is as below:
Connection:
 ST-LINK v2 5.0v <--> Dupont red pin
 ST-LINK v2 GND <--> Dupont black pin
 ST-LINK v2 SWCLK <--> Dupont green pin
 ST-LINK v2 SWDIO <--> Dupont white pin
 LGT-92 power can be on or off.
Step1: Install ST-LINK driver first and then install ST-LINK Utility
Step2: Download the LGT-92 Image files.
Step3: Open ST-LINK utility, file --> open file to select the image to be upgraded.
Step4: Keep pushing the small reset button on LGT92 and then click the “Program Verify” button
on ST-LINK.