If you only need to read Nicolet data for research, the FieldTrip toolbox can import Nicolet file formats from 2012–2020 via the FILEIO plugin . Key Features of the Nicolet EEG Software
The Nicolet viewer is more than a simple file opener; it is a robust diagnostic tool built for various neurological environments: nicolet eeg viewer download
Nicolet EEG Viewer Download: Comprehensive Guide to Access and Installation If you only need to read Nicolet data