According to official X-Rite Operating System Support documentation, the closest legacy versions typically cited are v1.8.1 (the final release for macOS 10.11 El Capitan) or v1.7.1. Recommended Actions
If you require a version from the 1.8.x branch for compatibility with older hardware or operating systems, consider these options: I1profiler 1.8.3 Download
The is a powerful tool for the right user. It is the last of the "offline-first" generation of color software. If you manage a historical studio or a locked-down Windows 7 press station, this version is a lifesaver. I1profiler 1.8.3 Download
: Note that newer "i1Display" colorimeters are now supported by X-Rite’s partner, I1profiler 1.8.3 Download