Windows ME/4.90.2380.2

Windows ME build 2380.2 is the official Beta 1 release of the Microsoft Windows ME operating system. It is known for including one file that could be from Neptune build 5067.1,. System Restore doesn't work.

Features

 * OOBE
 * Help and Support Center, with help resources about Activity Centers

Activity Centers from Neptune build 5111
According to Twitter user Albacore (@thebookisclosed), the Activity Centers from Neptune build 5111 could also run on this build of ME, and made available two files that should be copied into the  folder of the build's ISO before installation so that the Activity Centers work by default.