testo 350 – Firmware
 
"Firmware" is the internal instrument software that makes our analyzers operate. Like
other software packages, firmware can be upgraded with new analyzer functions for
easier operation, improved performance, additional user calculations, and more.
 
Click here for a detailed description of the latest "Control Unit" and "Analyzer Box"
firmware upgrades.
 
There are different options to performing an upgrade. By following the instructions
below and "doing-it-yourself" you can start using the new functions immediately, or if
you prefer, you can send your analyzer to our service department or have it upgraded
at your next scheduled service checkup.
 
If you do decide to return your analyzer to our service department, please follow a
few steps for returns or if you need help during your do-it-yourself firmware upgrade
contact our service department at 800-227-0729 from 8 a.m. – 5 p.m.,
Monday – Friday.
 
(Helpful Hint: In that the original default parameters are automatically reset after an
upgrade print your display beforehand so it is easier to recall your preferences).

Start "Do-It-Yourself" Firmware Upgrade Here
 
1. Do This First
These "Download Instructions" show you how to download the files onto your
computer. Print Out "Download Instructions" – (76 KB) PDF
 
2. Do This Second These "Instrument Software Update Instructions" show you how to use the Flash
Program and how to update (flash) the instrument software into the 350 M/XL Control
Unit and Analyzer Box. Print Out "Instrument Software Update Instructions"
– (296 KB) PDF
 
Step 1: Flash Program
Before upgrading your testo 350 M/XL Emission Analyzer System, FIRST download
the Flash Program to your Local "C" drive. Download Program – (680 KB) EXE
 
Step 2: Select the firmware that matches the "Control Unit"
 
testo 350 M/XL Control Unit
Here is the NEW instrument software Version 2.05 for your testo 350 M/XL Control
Unit. Remember to download it to your local "C" drive. Download File – (2 MB)
 
testo Control "S" Unit – Version 2.03
Here is the instrument software Version 2.20 for your testo 350 "S" Control
Unit. Remember to download it to your local "C" drive. Download File – (2 MB)
 
NEW Firmware – Version 2.21
Step 3: File – testo 350 M/XL Analyzer Box
Here is the NEW instrument software Version 2.21 for your testo 350 M/XL Analyzer
Box. Remember to download it to your local "C" drive. Download File – (1 MB)