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Developer
LeopardAssist Project
LeopardAssist is a simple tool to install Leopard on older, unsupported Power Macs.
It bypasses the 867 MHz processor check in the Leopard installer to allow systems that don't meet the requirements to complete installation. It achieves this by temporarily faking the clock speed in the device tree, changing it to 933MHz, and then launching the Leopard Installer. No modified Leopard DVD's, no hardware hacks or tweaks, just a one-time run application. (Much like XPostFacto)
This application is not required on the majority of systems with processor upgrades that already
It bypasses the 867 MHz processor check in the Leopard installer to allow systems that don't meet the requirements to complete installation. It achieves this by temporarily faking the clock speed in the device tree, changing it to 933MHz, and then launching the Leopard Installer. No modified Leopard DVD's, no hardware hacks or tweaks, just a one-time run application. (Much like XPostFacto)
This application is not required on the majority of systems with processor upgrades that already
What's New
Version 2.3.3:
Final is a service release and unless further noted, will be the last release in the LeopardAssist series. This build corrects minor bugs in the application itself, while adding a few handy new features and improvements.
- Fake CPU Speed lifted to 933MHz, giving the system room to "give or take" from the modified CPU speed.
- Disables "Restore System Defaults" if G5 or Intel detected.
- Changes to behaviour on Multi-Processor Systems
- Added "Demonstration Mode" for unsupported systems to demo the software.
- Code Cleanup.
- Changes to Final Restart step, now shows steps to recover from problems.
Version 2.3.3:
Final is a service release and unless further noted, will be the last release in the LeopardAssist series. This build corrects minor bugs in the application itself, while adding a few handy new features and improvements.
- Fake CPU Speed lifted to 933MHz, giving the system room to "give or take" from the modified CPU speed.
- Disables "Restore System Defaults" if more...
Requirements
PPC, Mac OS X 10.2 or later (Mac OS X 10.3 or later recommended).
PPC, Mac OS X 10.2 or later (Mac OS X 10.3 or later recommended).
LeopardAssist User Discussion (Write a Review)
Overall:
(4)
(4)
Displaying 1-10 of 20
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LeopardAssist is a simple tool to install Leopard on older, unsupported Power Macs.
It bypasses the 867 MHz processor check in the Leopard installer to allow systems that don't meet the requirements to complete installation. It achieves this by temporarily faking the clock speed in the device tree, changing it to 933MHz, and then launching the Leopard Installer. No modified Leopard DVD's, no hardware hacks or tweaks, just a one-time run application. (Much like XPostFacto)
This application is not required on the majority of systems with processor upgrades that already have their processor speed bumped beyond the 867MHz cutoff point. As such LeopardAssist was not built to factor in these upgrades.
LeopardAssist is a free but discontinued tool. Support was discontinued in mid-2009 and the application is no longer updated now with the release of Mac OS X Snow Leopard.
It bypasses the 867 MHz processor check in the Leopard installer to allow systems that don't meet the requirements to complete installation. It achieves this by temporarily faking the clock speed in the device tree, changing it to 933MHz, and then launching the Leopard Installer. No modified Leopard DVD's, no hardware hacks or tweaks, just a one-time run application. (Much like XPostFacto)
This application is not required on the majority of systems with processor upgrades that already have their processor speed bumped beyond the 867MHz cutoff point. As such LeopardAssist was not built to factor in these upgrades.
LeopardAssist is a free but discontinued tool. Support was discontinued in mid-2009 and the application is no longer updated now with the release of Mac OS X Snow Leopard.
Copyright © 2012 MacUpdate LLC
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Charneca36 reviewed on 01 Jan 2012
+4
LeopardAssist doesn't normally have a problem with CPU upgrades, but since most of the CPU upgrades available on the market push the system past the required 867MHz barrier anyway, there's simply no need for this tool on those systems.
The software was and still is only a frontend to compile and execute a shell script to be deployed into the system NVRAM at boot time, and considering just how little there is to work with in the way of faking a CPU clock speed, it's been developed to the best of my abilities. Now with the release of Snow Leopard, there's not much more that can be done to push LeopardAssist into the future.
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Micg reviewed on 02 Dec 2009
No support for CPU upgrades that is cleared out in any documentation and it did not work after many attempts.
Luckily I had a Leopard compatible eMac and installed it on a FW 400 PATA drive and booted up on my G4 DA 800MHz and it runs super fast too even on the FW 400 Drive that I still use.
I'm disappointed that Mac utilities for Mac OS X like LeopardAssist can be so cheesy. o_O
+12
I seem to recall that it might, but am not 100% on this.
I'd gladly buy a new Mac with Leopard on it IF I had the extra cash laying around, but it seems the wife AND I want to continue to eat and live indoors, for some strange inexplicable reason.
Hopefully LA will fill the void.
Thanks.
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+4
It should run quite well on your Digital Audio 533, but it's not about to set the world of fire with its performance. If you need it to work at peak performance then Tiger 10.4 is still the champion, but if your main concern is running the very latest browsers or other software, then 10.5 should work well enough to handle thst.
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Bonbons reviewed on 28 Sep 2008
To my surprise new software from Apple needs new hardware from Apple... ;-)
I saw tests were Leopard was called "much faster" than Tiger, well maybe, maybe on Intels, but on my G5 the Tiger runs faster, not to speak from the many G4s around.
If youl think you can't survive without 10.5, this is the way to install it on older Macs, but if you see your Computer as a tool to get your work done or to have some fun, I think Tiger is just fine.
+2
Even on a supported powerbook 1,25, 1,5 GB RAM, leopard is slow. It could be an illusion, but even slower from update to update.
Actually under 10.5.5 I'm considering downgrade. It's a pain every time when I'm changing from last generation iMac to my powerbook.
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Cheers to everyone who showed support, I really do wish I could have continued working on this but unfortunately my G4, my only testing machine had a logic board failure which severely damaged the progress of the project.