If you used one of the automatic options when adding the Adobe Target Tool, you can easily update the file whenever Adobe releases a new version of the mbox.js library or if you modify your library settings in the Target UI.
For more information about the automatic options, see the following topics:
From the property’s Overview page, click the gear icon ( ) next to the desired tool.
Expand the Library Management section.
Click Check for Updates and follow the instructions in the dialog boxes to update the file.