System 6.1 ( 1992) - limited machine-only release for the Middle Eastern market.System 6.0.8.1 ( 1992) - limited machine-only release for the international market.System 6.0.8L (Classic, LC, PB100) ( 1992) - limited machine-only release for the Pacific market.System 6.0.6 'SixPack' - never released due to AppleTalk bug.Macintosh System Software (0.7) System File 3 System Software with HD20 Support (0.5) System File 2