8 Tips and assistance
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8.3. Updating the instrument software
Under www.testo.com/download-center you can download the
current instrument software (Firmware) for testo 320 basic
(registration required).
> Unplug the micro USB cable and switch off the testo 320 basic.
1. Hold down [▲].
2. Reconnect the micro USB mains cable to the testo 320,
continue holding down [▲].
- The display shows Firmware update along the bottom edge.
3. Release [▲].
- Your PC recognises the testo 320 basic as a removable
medium.
4. Copy the new file (ap320br.bin) to the detected removable
medium.
- On the display the status bar progresses from left to right. This
process may take a few minutes.
- Once the instrument software (firmware) has been updated, the
system will automatically reboot and is ready for use.
5. Disconnect the connecting cable from the testo 320 basic.
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