# Installation of the Realsense

# Flash realsense firmware

download the Firmware zip file (opens new window)
unzip it in a folder whose path does not have any “ ” (space) in it, i.e no folder in hierarchy with “ “ in it. It will be way more simple later!
connect the realsense to the computer (it has to be a USB 3.0)
start intel-realsense-dfu.exe
- choose 1 + Enter (Update Camera device)

Install Intel.RealSense.SDK.exe (opens new window)
Unpack the Nuitrack driver (opens new window) in C:\Program Files\NuiTrack
Install OpenNI C:\Program Files\NuiTrack\OpenNI-Win64-1.5.7-Dev.msi
Reboot (Do not skip!)
Add the following System wide env. variable (“Variables systeme”):
- NUITRACK_HOME: C:\Program Files\NuiTrack\nuitrack\
- PATH: C:\Program Files\NuiTrack\nuitrack\bin\
Plug the realsense and check if everything is fine in the Intel RealSense Viewer (the executable that is installed with the realsense SDK)

Run C:\Program Files\NuiTrack\nuitrack\activation_tool\Nuitrack.exe with Administrator Rights
- Run the tests, you should see a visualisation window popping
- When the tests passed
  - buy a Nuitrack Pro licence key : https://cognitive.3divi.com/app/nuitrack/dashboard/ (opens new window)
  - enter the licence key for Nuitrack pro (generated from the nuitrack cloud console after buying a new perpetual license) in the text box then click on Activate
Weirdly it should list 0 keys (perpetual and annual) even though you have bought one, this is “normal”
Click to “Update to Pro”
The licence should be activated !