Firmware/Mac/4.x

From The Apple Wiki
< Firmware‎ | Mac
Version Build Release Date
4.0 ? January 1987 (1987-01)
4.1 ? 2 March 1987 (1987-03-02)
4.2 ? October 1987 (1987-10)
4.3 ? November 1987 (1987-11)
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