How can I load the firmware update onto the ST9201?
The ST9201 is available in several versions. The ST9201C only features an AC high voltage test. The ST9201, ST9201B, and ST9201S also include DC high voltage testing and insulation resistance testing. Additionally, X-variants are available with safety current limitation. The term “safety current-limited” already indicates that this involves hazardous voltages.
To receive the correct update for your specific device, please send a short email including the serial number and device type to info@sourcetronic.com. We will then send you the necessary files. Proceed with the update as follows:
Required files: 9201update.ini, ST9201_V2.45.BIN, teraterm-4.85.exe
- Install TeraTerm: Use the teraterm-4.85.exe file to install TeraTerm with the preselected settings in German.
- Load settings to update the ST9201: Open TeraTerm and choose an available serial COM port. The terminal window will appear. Click on “Setup” in the top menu and then “Load setup”. In the dialog, select the file ST9201update.ini. After loading, you’ll return to the terminal window.
- Connect the ST9201: Connect the ST9201 to the selected COM port. No further settings are required on the device.
Transfer the firmware file to the ST9201:
To enter “Download” mode, hold the “d” key on the keyboard and power on the ST9201 simultaneously. The terminal should then show: “Type d download, Others run app”. The device display will be backlit but blank. In TeraTerm, click “File” → “Transfer” → “XMODEM” → “Send”, then select the firmware file ST9201_V2.45.BIN and click “Open”. The update process begins and takes about 90 seconds. Do not power off the device during the update! Once complete, the device will automatically restart with the new firmware installed.