Firmware is the name given to software that is written into memory circuits, such as flash memory, that will hold the software code indefinitely, even when power is removed from the hardware. Firmware on Intel Mac computers is designed to be updated if necessary through a software update.
EFI and SMC firmware is stored on the Mac Pro (Early 2008) logic board. EFI firmware updates update the Boot ROM, and SMC updates update the System Management Controller firmware.
The SMC manages fans and other environmental parameters that are independent of the Boot ROM.
Firmware symptoms can be easily mistaken for hardware issues (e.g., overheating issues, fan noise issues, etc.). Always check both EFI and SMC firmware versions and update if necessary before replacing any hardware components in the Mac Pro (Early 2008).
The following lists describe the type of symptoms that may be resolved by updating the EFI and SMC firmware in the Mac Pro (Early 2008).
Please follow the steps outlined in KnowledgeBase article 303364, "About Firmware Updates for Intel-based Macs," to perform an EFI and/or SMC firmware update. Information about firmware versions for Intel Macs can be found in KnowledgeBase article 303880, "Mac OS X: Firmware Updates for Intel-based Macs."
Was this article helpful?
Read how to maintain and repair any desktop and laptop computer. This Ebook has articles with photos and videos that show detailed step by step pc repair and maintenance procedures. There are many links to online videos that explain how you can build, maintain, speed up, clean, and repair your computer yourself. Put the money that you were going to pay the PC Tech in your own pocket.