Follow these steps to determine whether your PowerBook computer needs the PowerBook Firmware Update 2.7:
1. Open the Apple System Profiler application program; the Apple System Profiler window appears.
2. Reveal the product information by clicking the Product Information disclosure triangle.
3. Note the Boot ROM version. If it is $0003.27f2 or later, the PowerBook does not require PowerBook Firmware Update 2.7. If an earlier Boot ROM version is listed, such as $0003.24f1, you should install PowerBook Firmware Update 2.7.
For the PowerBook Firmware Update 2.7 software and Read Me document, please see article 88042: "
PowerBook Firmware Update 2.7 Document and Software"