My Power Macintosh computer included System 7.5.3 pre-installed on the hard drive. However, I have heard that the pre-installed version of System 7.5.3 is not the same as the version of System 7.5.3 that you get by installing System 7.5 Update 2.0.
* Does this mean I also need to install System 7.5 Update 2.0?
* Do I then need to install System 7.5.3 Revision 2 as well?
* Can I skip installing System 7.5 Update 2.0 and just install Revision 2?
* Does this mean I also need to install System 7.5 Update 2.0?
Although your computer has System 7.5.3 pre-installed, you should still install System 7.5 Update 2.0. System 7.5 Update 2.0 includes some additional fixes that are not included with the pre-installed version of System 7.5.3.
Alternatively, you can purchase and install System 7.5 Version 7.5.3 which includes all the latest updates and fixes for System 7.5.
* Do I then need to install System 7.5.3 Revision 2 as well?
Revision 2 is a set of six system software enhancements that improves the reliability and performance of some computers using System 7.5.2 (on PowerBook computers ONLY) and System 7.5.3. If you have one of the computers listed below, you should install System 7.5.3 Revision 2 AFTER installing System 7.5 Update 2.0. If your computer is not listed, you can still install System 7.5.3 Revision 2, but it will not provide you with any benefits.
- All PowerBook systems using Connectix RAM Doubler
- All PowerBook 5300 and PowerBook Duo 2300 systems
- All PowerBook 200 or 500 Series systems which have been upgraded with the Macintosh PowerBook Processor Card Upgrade Kit with PowerPC (or upgraded with similar third party products).
- All Macintosh 7200, 7500, 7600, 8500, and 9500 systems
* Can I skip installing System 7.5 Update 2.0 and just install Revision 2?
No. System 7.5 Update 2.0 and System 7.5.3 Revision 2 do NOT contain all of the same fixes. So, if your computer requires System 7.5.3 Revision 2, then you should first install System 7.5 Update 2.0 and then install System 7.5.3 Revision 2, regardless which computer you have.
Alternatively, you can purchase and install System 7.5 Version 7.5.3 which includes all the latest updates and fixes for System 7.5, including those installed with both System 7.5 Update 2.0 and System 7.5.3 Revision 2.
* What is System 7.5 Version 7.5.3?
System 7.5 Version 7.5.3 contains all the updates and fixes for System 7.5 into one installer that can be used on any Macintosh computer that supports System 7.5. It contains the fixes from System 7.5 Update 1.0, System 7.5 Update 2.0, and System 7.5.3 Revision 2.
System 7.5 Version 7.5.3 is not available on the online services. It is a commercial product which is available from Apple authorized resellers.
The name Unity says it all. It unites all the various flavors of 7.5.3 into one installer that can be used to install on any mac.
For additional information about the fixes included in System 7.5 Update 2.0 and System 7.5.3 Revision 2, use the following information to search for related articles in the Tech Info Library:
"system 7.5.3 and | System 7.5 Update 2.0: System 7.5.3 Differences
update" | System 7.5 Update 2.0: What's New in This Update
|
"revision 2" | Mac OS 7.5.3 Revision 2: Overview & Installation
| Macintosh System 7.5.3 Revision 2: FAQ
These articles can help you locate the software update mentioned here:
• "Where To Find Apple Software Updates" - Lists online services for free Apple software updates.
• "Obtaining Apple Product Support in the USA" - Lists 800 numbers and online services for software updates, Apple support information, and a subset of the Apple Tech Info Library.
This article was published in the Information Alley on 07 June 1996.
