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Sonnet Firmware Updater Installer Version 3.1 software installs the Sonnet Firmware Updater and Sonnet Firmware Remover applications to your computer's Mac OS X Applications folder. Sonnet Firmware Updater installs the firmware patch necessary to support Encore/ZIF (700 MHz and faster) and various Encore/ST processor upgrades in the listed compatible computers.

What's New

Version 3.1:
  • Adds support for Power Mac G3 (Blue & White) and all Power Mac G4 computers


  • Mac OS X 10.3 or later
  • Power Mac G3 (Blue & White)
  • Power Mac G4 (all models)

*Previously available here

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Sonnet Firmware Updater User Discussion

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Anonymous Member IconReview

On a Crescendo PCI G3-450 in a 9500 w/ 1GB RAM this update stopped the annoying little memory leak introduced in 2.0.5.

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Version 2.3
Sylvester Member IconReview+0

The 2.0.3 is a very good driver for my PPC7300 Mac. Since version 2, the card is very stable, like my old PPC604/200.

Everything goes fine with media and mp3 creation & playing programs such as ITunes, Audio Catalyst and Quicktime and Windows Media Player. I do not use Internet Explorer 5.1.6 as this is not the Browser for my taste. I prefer ICab for fast Browsing and Netscape or Mozilla for buying through my credit card :-)

As I am a very old Mac user, I know that this driver is very well working, so, thanks the programmers for their good hard work and Sonnet for giving it's higher technology for bringing to life the older Apple systems.

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Version 2.0.3
Still OS9.2.1 user Member Icon+0
Still OS9.2.1 user

I use PMG3MT(originally-G3:266) with Zif G4/500/1M and OS9.2.1.(Japanese)
a. Some application software suddenly halt without alert, for example, IE5.1.6, OE5.0.6 and PalmDesktop2.4.3.
b. iTunes2 never fail to halt without alert when I encode CD tracks into MP3 and play the same CD at a time.
c. Movies played on Windows Media Player7.1 or Real Player 8 Basic have some noises.
However, I like this Zif G4 board basically and I hope more update to fix these problems.

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Version 2.0.2
Antony N. Lord (www.antonylord.com) Member Icon+0
Antony N. Lord (www.antonylord.com)

Works just fine on my 8500.

Be sure to install ithe 2.0.2 driver with extensions off (shift key at bootup) or it will crash.

Don't forget to pull out the L2 cache on the 8500 (and others) - usually between the RAM banks.

See the Sonnet Manual (available from their site) for full details...

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Version 2.0.2
Barry Ryan Member Icon+0
Barry Ryan

Crashed my 8500 might have bug somewhere.

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Version 2.0
There are no Ratings for this App yet.
> 4 2


Current Version (3.x)


Downloads 8,027
Version Downloads 2,499
Type Drivers / Other
License Free
Date 09 Jun 2007
Platform OS X / PPC 32
Price Free