Software / Firmware
Download testo 320 firmware (V1.12, BIN, 13.053 KB) If the firmware update does not start under Windows 8.1 or Windows 10, a new bootloader must be installed on the measuring device once.
A description and all necessary files can be found under the search term: Update-Kit / Bootloader
Testo ZIV driver for testo 300, testo 320 and testo 330 (v2.3, EXE, 65.644 KB) The Testo ZIV driver is used to connect the testo 300, testo 320 and testo 330 measuring instruments to an application program (sweeping district administration program) according to the interface defined by the Zentralverband des Schornsteinfegerhandwerks (ZIV, Central Association of Chimney Sweeps) in version 1.0 of 01. August 2012, in version 2.0 of 13. February 2017 as well as version 3.0 from 02. July 2021. Please check with the manufacturer of your application program as to whether this interface is supported.