Users were required to download Software Update 1.3.1 prior to installing Mac OS X 10.0.1. I opened the Disk Utility on the OS X Utilities screen and validated all drives shown (using the 'Repair Disk' button).
Support for the Secure Shell service was also improved, and for Japanese users, an update to the Epson printer drivers was made available. For me it was due to an invalid file entry on the disk - perhaps due to a recent power loss. The improvements included better support for third-party USB devices, Classic environment compatibility and overall application support. The new update has the build number 4P12. It was released on April 13, 2001, and its build number is 4L13. It was released on April 13, 2001, and its build number is 4L13. Mac OS X 10.0.2 (or as it was codenamed, Darwin 1.3.1) is the second update to Mac OS X 10.0 'Cheetah' and to Mac OS X overall. Mac OS X 10.0.1 is the first-ever update to Mac OS X, as well as to Mac OS X 10.0 'Cheetah'. Mac OS X 10.0.1 is the first-ever update to Mac OS X, as well as to Mac OS X 10.0 "Cheetah".