No publicly distributed "license key" will work permanently.
| Software | License Type | Can handle DMG? | Bootable USB creation | Windows/macOS | |----------|--------------|----------------|----------------------|---------------| | | Freemium | Yes (extract only) | No | Windows | | 7-Zip | Open Source | Yes (extract DMG) | No | Windows/Linux | | Rufus | Free | No (ISO only) | Yes | Windows | | BalenaEtcher | Free (Open Source) | Yes | Yes | Windows, macOS, Linux | | TransMac | 15-day trial | Yes (read/write DMG) | Yes | Windows |