简单的说，就是支持自动消除ISO中的垃圾填充数据，支持对ISO进行文件级别的操作，例如删除文件和目录，替换/更新文件，新建文件等。支持展开ISO文件。另外兼容性很好，号称每个ISO都能用……
下边是官方网站原文：
- Open existing PSP (including VCDROMx) Images: UMDGen v2.00 will automatically re-calculate LBA positions to UMD standard positions and remove excess padding. For example, the Infected iSO size is 562MB, when opened in UMDGen v2.00 the iSO size is 538MB.
- Edit existing PSP Images: Delete folders/files, relink files, update/replace files, add new files/folders, move file LBA positions.
- Extract iSOs: Extract the entire iSO, or select Files/Folders to extract them.
- For PSP RipKits: Create iML/iMS Files from both existing and new iSO images.
- Automatically converts VCDROMx Images to correct UMD Format when saved.
- Uses UMD-compliant padding for files that can be switched On/Off now.
- Compatability is looking NiCE, every iSO we tested thus far now works. ~_^