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What OS did your 6400 ship with? I thought it was 7.6. or 7.6.1?
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What OS did your 6400 ship with? I thought it was 7.6. or 7.6.1?

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Molly!<br />
&nbsp; &nbsp; &nbsp; &nbsp; It came with 7.5.3<br />
<br />
Bob Quinn<br />
A55REQ@aol.com
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Molly!
        It came with 7.5.3

Bob Quinn
A55REQ@aol.com

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I would actually suggest going forward to 8.1 as OS 8.0 is not so stable. If you want to go back to 7.5.3, just do a clean install of the Original media your Mac shipped with...
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I would actually suggest going forward to 8.1 as OS 8.0 is not so stable. If you want to go back to 7.5.3, just do a clean install of the Original media your Mac shipped with...

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The answer to my question has merit and is logical! Many thnx for your help!
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The answer to my question has merit and is logical! Many thnx for your help!

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My 6400/180 does not have a modem that works well with sound. I'm expereincing may &quot;freezes&quot; I believe that the problem is a combo the internal modem and OS 8.0 Question: How do I go back to OS 7.5?
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My 6400/180 does not have a modem that works well with sound. I'm expereincing may "freezes" I believe that the problem is a combo the internal modem and OS 8.0 Question: How do I go back to OS 7.5?

Change of OS

Mac OS X is the desktop operating system from Apple Inc., found on Macintosh computers. OS X consists of a Mach/BSD-based kernel, operating system interfaces primarily based on FreeBSD and additional frameworks (written in C, C++ and Objective-C providing user interface and application-level services.

Mac OS X

Apple's early computers ran on a variety of operating systems, including a Pascal version and one based on CP/M, before releasing its ProDOS with the advent of its 16-bit computer. With the release of the Lisa, which had its own OS, Apple and computing entered the graphical age; it was followed by the Macintosh, which offered a series of "System" operating systems. Other Mac operating systems included PowerPC until Apple acquired NeXT and folded it into the Mac OS. Current operating systems for Apple devices are Mac OS-X and iOS.