Step 1: Turn editing on. Go to the resource that you want to replace by a newer version and click on Edit.
Step 2: To replace the old resource, click on Choose or upload a file.
Step 3: Click on Upload a file but make sure that your new (updated) file has the same name as the existing resource file.
At this point, your old file will be overwritten without warning! The old resource file is no longer available now. The links to this resource remain unaffected though.
Step 4: Check the box and click on Choose.
Important: For these changes to become effective, you need to click on Save changes at the very bottom of a new screen.
Note: If the new version does not appear on your main page, it may be necessary to click the “refresh” button on your browser. This resets the “cache” in your browser and will also reflect any changes made to the database which is underneath the Moodle interface.