The disclosure discloses a method, equipment and system for incremental updates in the information processing technology. The method includes: unpacking a new version installation package to get a new version unpacked folder having a new version unpacked file and a new version signature subfolder having a new version unpacked file; obtaining header file information of the at least one new version unpacked, and converting a format of the header file information; packing the new version convert folder to a new version archive package and obtaining at one historical version archive package; generating and obtaining one differential file; and releasing the one differential file wherein the at least one differential file that is released is selected by a client that has memory and at least one processor to download and form a second new version installation package according to the at least one differential file that is downloaded.