Any play that has been created using ZIP can be updated using ZIP itself or VS Code plugin. The following steps mentions, how the same play can be updated via ZIP file.
Steps to Update
1. Edit Metadata
Open the play detail page and Click on the Edit Metadata option under More Actions.
2. Upload Zip File
Edit Metadata option will open a dialog box, which will provide options to either upload a Zip File or Edit with VS Code. Click on Zip file and upload the Zip file.