Flash Player for Firefox (ver 13.0.0.309) Freeware This version of the Adobe Flash Player is intended for Firefox, and will only work on Windows XP and above. This is a full offline installer. The version 11.1 that works on Win2k has problems playing many of the newer flash videos (you cannot skip ahead of the buffer on streaming videos for example). The newest versions of Flash on the other hand use too many system resources for older PCs, and cause jerky video playpack, especially when running in Full Screen. Although Firefox will complain about this version being old, this version of Flash works very well on older PCs, and unless you must have the latest version for a special reason, you should use this version instead.