Hi my WM24 app bundles into a very large apk (due to a database it ships with) so I'm trying to pack the database into an expansion file which is all good. So now the install comprises an apk and an obb (the expansion file). During startup my app can see the obb file, but how do I unpack it? From what I read it is a proprietary android format, but I can't find out how WM can unpack it so I can copy the database file to it's home directory.