You can find the official installer for version 1.2.3 through the following sources: Official Creality Cloud (Legacy Section): The most reliable source for historical versions is the Creality Cloud Software Page
Which are you using? (e.g., Ender 3 V3, K1 Max) creality slicer 12 3 link download
For users of legacy 3D printers, finding specific older software versions like is essential for maintaining compatibility with original hardware profiles. While Creality has moved toward newer platforms like Creality Print , many hobbyists still prefer the classic interface for its simplicity and low system requirements. Creality Slicer 1.2.3 Link Download You can find the official installer for version 1