An apparatus for upgrading a software product is provided. The apparatus generates an upgrade package of the software product, the upgrade package including an installation file of the software product, a metadata file and one or more executable files. The apparatus also executes the one or more executable files to perform operations for upgrading the software product. The operations include unpacking the installation file; adding a disk file in the installation file to a virtual machine based on a file name indicated in the metadata file, the disk file including upgraded files of the software product; mounting the disk file to a mount point of the virtual machine, wherein the mount point is indicated in the metadata file; and providing a path to access the upgraded files based on the mount point and a folder path of the upgraded files indicated in the metadata file.