Creality Slicer 1.2.3 download link is available through the Creality Cloud Download Center
If you are setting up a new printer today (especially a K1, Ender 3 V3 SE, or any printer from 2023 onwards), do not use version 1.2.3. Instead, download Creality Print 5.1 —it is faster, more reliable, and actively maintained. creality slicer 12 3 link download