iMac EFI Firmware Update 1.4

Name: iMac EFI Firmware Update
Rating: 2 (2 reviews)
Author: Apple

Free This update fixes intermittent system freeze issues for iMac computers with ATI Radeon HD 4850 graphics and fixes wake-from-sleep issues in Boot Camp.

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Latest version:

2.1 See all

Developer:

Apple

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Free 1.7 MB

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Used by 3,252 people

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iMac EFI Firmware Update 2.1 (latest)

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Info updated on: Apr 01, 2024

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This update fixes intermittent system freeze issues for iMac computers with ATI Radeon HD 4850 graphics and fixes wake-from-sleep issues in Boot Camp. This update is only for specific iMacs and with other models could fry one's iMac. Apple software updates should determine if it is required and locate it properly on Apple support servers.

To complete the firmware update process, please follow the instructions in the updater application (/Applications/Utilities/iMac EFI Firmware Update.app). The updater will launch automatically when the Installer closes.

After the firmware is successfully applied to your Mac, your Boot ROM Version will be:
IM91.008D.B08

Comments (1)

2 votes

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The Fox Hat

This update does NOT apply to my iMac and has the potential to fry it, so I think a little more work on this app is needed before you damage someones pride and joy!!

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