LaserWriter drivers 8.0, 8.1.1, and 8.1.2 were tested with System 6.0.7, so they are compatible. However, it is not know if System 6.0.5 is compatible, since no tests were performed using this version of System 6. We would recommend upgrading all Macintosh computers using System 6 to System 6.0.7 or System 6.0.8.
Backward compatibility testing with System 6.x ended with LaserWriter 8.1.2., so LaserWriter driver 8.2 was not tested with any version of System 6.