If you ran an installer from “Rahim Soft” claiming to be Topcon Tools 8.23:

With both Topcon Tools 823 and Rahim Soft installed, users can now unlock a plethora of functionalities designed to enhance their surveying and construction projects.

Topcon Tools (version 8.23) is a Windows-based software suite designed for:

It is the companion software for Topcon’s MAGNET field controllers and FC-series data collectors. Version 8.23, though not the latest, is still used by firms that prefer its interface or need compatibility with older project files.

The safest way to obtain Topcon Tools and related software (like Link 827 and Rahim Soft) is through official channels.

Topcon occasionally offers time-limited trials. Contact an authorized dealer (e.g., SITECH, Topcon Positioning Systems) and request a temporary license for version 8.23. This is a safe, legal way to test the software.