FL Studio, developed by Image-Line , traditionally allows users to open old projects in new versions, but the reverse is not true. Once a project is saved in a newer version (e.g., FL Studio 24), it typically cannot be opened in an older version (e.g., FL Studio 11 or 20). This "version lock" creates several hurdles for producers:
Some "FLP downgrader" kits on eBay simply swap the floppy cable, rotating it 180 degrees. Do not do this. It reverses the motor step direction and can crash the read/write head into the stop, destroying the drive. flp downgrader