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The downloads can be found on the right side. It is recommended to read the following to ensure proper installation.


When moving to version 5 a few manual steps are necessary. Without these steps your current project will not behave correctly. These steps are described in the announcements on the iTrain forum. It is recommended to always check the forum announcements before installing a new upgrade.


Version 5 is a paid update. That means that people who have bought a 4.x license have to buy an upgrade to be able to switch. After installing version 5.x you first have to enter the new license key for version 5 before you open the project file that you used in 4.1. Older project files should first be opened and saved in iTrain 4.1 before opening them in iTrain 5.x.

System requirements

There are some requirements to be able to run this program. You will need at least a computer with a 32-bit or 64-bit operating system like macOS, Windows or Linux.

The minimum amount of required memory is 1 Gb of RAM. The minimal screen resolution to run iTrain properly is 1280 x 800. Depending on the size of the layout a higher resolution is recommended.

Serial port and USB

Some older digital systems (Märklin 6021/51 or Intellibox classic/IR) are connected to the computer by means of a serial port (RS232). However, most computers don't have a serial port anymore. You can use a USB serial adapter to create a serial port. We recommend an adapter based on the FTDI chipset.

Newer digital systems may already have a USB interface. In most cases this USB interface emulates a serial port in software so that for iTrain it acts like a serial port. This serial port emulation or Virtual Com Port (VCP) requires drivers to be installed on your computer. Normally Windows drivers are already supplied on a CD-rom, but in many cases drivers for macOS and Linux are also downloadable from the internet from the chipset supplier.

Depending on your digital system two drivers are very popular and available for multiple platforms:


The installation procedure differs per operating system:

macOS (OS X)

You have to download the macOS Intel disk image or macOS M1 disk image and copy the application to your 'Applications' folder.

For OS X 10.7 - 10.12 we recommend upgrading to at least High Sierra (10.13) if this is possible with your Mac.

You can drag the iTrain to the 'Dock' to start it from there as well.


You can download and install the 64-bit installer or the 32-bit installer and run it by double clicking. Ignore any warning before the download starts and expect a request for making changes to your device. This is necessary for installing iTrain in the folder 'Program files'.


You can download and install one of the Debian packages and run them by double clicking or starting them in the Terminal with:

sudo dpkg -i iTrain_linux_jre_<architecture>.deb


Java needs to be installed first. To check if it is already installed you have to type the following in the Terminal:

java -version

If there is no Java 8 or higher available then install a new version. To download a Java Runtime environment (JRE) go to the package manager to install Java.

Ubuntu Linux: sudo apt install default-jre

If this is not working you have to install OpenJDK manually. We recommend installing OpenJDK 11 with Long Term Support (LTS).

After installing Java you can download and install the installer. If the installation cannot be executed you can always start it from the Terminal with:

java -jar iTrain_install.jar