If the firmware version you see in System Information is newer than what's listed for your Mac, you don't need to apply the updates listed for that model. Select the Hardware section to view the Model Identifier, Boot ROM version, and SMC version numbers.Apple Menu > About this Mac > Overview > System report Use these steps to check your Mac's EFI Boot ROM and SMC firmware versions. If you don't see a firmware version listed in this article, it means that either a firmware update is only available as an automatic update, or no firmware update is needed. If your Mac needs a firmware update and it isn't installed automatically, check to see if a manual updater is listed below. Some firmware updates are also available as downloads you can install manually. Most firmware updates are automatically installed when you update or upgrade OS X.
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