You grabbed a lightweight "Recovery Only" DMG instead of a full "macOS Restore" DMG. Fix: Search for macOS Restore IPSW (ironically, Apple Silicon Macs sometimes prefer IPSW over DMG). Download the full 12-14GB IPSW file.
A DMG file, short for Disk Image, is a type of file format used by macOS to distribute software packages. It is essentially a compressed archive that contains the installation files for a particular application or tool. DMG files are commonly used for distributing software on macOS, as they can be easily mounted as a virtual disk, allowing users to install the software by simply dragging and dropping it into the Applications folder. apple configurator dmg file
Create "Blueprints" to automate the configuration of device settings, apps, and profiles. Device Restoration: You grabbed a lightweight "Recovery Only" DMG instead