Description: This 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 upgrade cards. Version 3.1 adds support for Power Macintosh G3 (Blue & White) and all Power Mac G4 computers. Computers: Power Macintosh G3 (Blue & White) and Power Mac G4 (all models). Note: Users running Mac OS X Version 10.5 should use version 3.2 of Encore Firmware Updater Installer (Mac OS X Version 10.5).
When installed correctly, the Encore/ST G4 card reusing the Apple heat sink is just as reliable as the more recent Encore/ST G4 card with a pre-attached Sonnet heat sink. Sonnet chose to pre-attach a heat sink to Encore/ST G4 upgrades (except for those with a part number that starts with SG4-C) because we determined that some users did not properly attach the Apple heat sink and clips, and we wanted to make the installation process easier.