I understand
https://docs.librecad.org/en/2.2.0_a/getstart/index.html is not clear enough for upgrades.
Which OS version are you using?
Here’s the streamlined table showing each LibreCAD 2.2.1.4 file and its target platform or use:
File Platform / Use
-------------------------------------------------------- ----------------------------
LibreCAD-2.2.1-latest.tar.gz Linux source archive
LibreCAD-2.2.1-latest.zip Cross-platform source archive
LibreCAD-v2.2.1.3-12-gd1ca469c9-aarch64.AppImage Linux (ARM64)
LibreCAD-v2.2.1.3-12-gd1ca469c9-arm64.dmg macOS (Apple Silicon)
LibreCAD-v2.2.1.3-12-gd1ca469c9-msvc.exe Windows (32-bit)
LibreCAD-v2.2.1.3-12-gd1ca469c9-win64-msvc.exe Windows (64-bit)
LibreCAD-v2.2.1.3-12-gd1ca469c9-x86_64.AppImage Linux (x86-64)
LibreCAD-v2.2.1.3-12-gd1ca469c9.dmg macOS (Intel)
LibreCAD-v2.2.1.3-12-gd1ca469c9.snap Linux (Snap package)
LICENSE All platforms
Source code (zip) Developers (Windows)
Source code (tar.gz) Developers (Linux)