Downloads for Testo thermal imagers (PC software & instrument firmware)
Here you can download the PC software and instrument firmware for your Testo thermal imager.

PC software
The PC software IRSoft allows you to easily evaluate your infrared images.
Please download the latest version of IRSoft to your PC and start the file “Setup.exe” to run the installation.
If you have already installed an older version of IRSoft on your PC, the existing version will be updated to the latest version.
Please read the IRSoft instruction manual for more information on using the software.

Download EXE Download IRSoft version 3.4

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Instrument firmware update
In order to be able to use the PC software optimally, your thermal imager should also be updated with the latest version of the instrument firmware.
Please observe the Download PDFinstructions for the firmware update testo 885 and 890
Please note: To update your firmware, you need the latest version of IRSoft (version 3.4 or higher).

Instrument firmware update for testo 885 and 890:

The current firmware versions are:
- testo 885: V1.52
- testo 890: V1.52


Download EXE Download instrument firmware testo 885 and 890

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Instrument firmware update for testo 870

Firmware version:
- testo 870: V1.04


Download EXE Download instrument firmware testo 870

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Instrument firmware update for testo 875i, 876, 880, 881 and 882:
Please observe the Download PDFinstructions for the firmware update testo 875i, 876, 880, 881 and 882

The current firmware versions are:
- testo 875i: V1.56
- testo 876: V1.56
- testo 880: V1.22
- testo 881: V1.56
- testo 882: V1.24


32-bit operating system:
Download EXE Download 32-bit instrument firmware

64-bit operating system:
Download EXE Download 64-bit instrument firmware