. While this isn't a direct "save-to-older-version," these neutral files can be opened in almost any version of 3ds Max. Convert 3D models The "Save to Previous" Native Method
If you have access to a newer version of 3ds Max, the most reliable method is to use the built-in "Save As" feature: Open your file in the newer version of 3ds Max. Save as type dropdown, select a previous version. : 3ds Max generally only allows saving back to the three previous versions (e.g., 3ds Max 2024 can save down to 2021). Exchange Formats (For Very Old Versions) Convert 3ds Max File To Older Version Online
If you have a friend or colleague with a newer version of 3ds Max, you don't need them to re-save the .max file. You need them to export an FBX. Save as type dropdown, select a previous version
Why this is preferred: only the native app can correctly translate all scene features; online converters can’t fully replicate 3ds Max’s proprietary data. You need them to export an FBX