EFI and SMC firmware updates for Intel-based Macs
Summary
This article lists firmware updates that were released for Intel-based Macintosh computers. They update the firmware that originally shipped from the factory. If your computer does not appear on this list, an update from the factory firmware is not necessary.
Some firmware updates for Intel-based Macs may not be displayed automatically using Software Update. If they do not appear in Software Update, they must be manually downloaded from the Apple Downloads site. If you are unsure whether your computer needs a particular update, simply download and open the update installer. The installer will alert you if the firmware update is already installed or not needed.
Products Affected
Xserve, MacBook Pro, MacBook, Mac Pro, Mac mini, iMac, MacBook Air
Checking your computer's EFI Boot ROM or SMC firmware version
- From the Apple menu, select About This Mac.
- Click the More Info... button.
- Under the Content header, select Hardware.
- The version information will be located in the pane on the right, such as this:
Available firmware updates
The table below lists available firmware updates for each Intel-based Mac.
Note: In some cases System Profiler may report later versions of firmware than those listed below; if this is the case, your computer does not require any additional firmware updates. However, if your firmware version is lower than the one listed in this table, you should upgrade by following the link provided.
| Computer | EFI Boot ROM version | SMC version |
| iMac | ||
| iMac (20-inch, Mid 2009) | IM91.008D.B08 (EFI 1.4) | - |
| iMac (20-inch, Early 2009) | IM91.008D.B08 (EFI 1.4) | - |
| iMac (24-inch, Early 2009) | IM91.008D.B08 (EFI 1.4) | - |
| iMac (20-inch, Mid 2007) | IM71.007A.B03 (EFI 1.3) | - |
| iMac (24-inch, Mid 2007) | IM71.007A.B03 (EFI 1.3) | - |
| iMac (20-inch, Late 2006) | IM51.0090.B09 (EFI 1.2) | - |
| iMac (24-inch, Late 2006) | IM61.0093.B07 (EFI 1.2) | - |
| iMac (17-inch CD, Late 2006) | IM52.0090.B09 (EFI 1.2) | - |
| iMac (17-inch, Late 2006) | IM51.0090.B09 (EFI 1.2) | - |
| iMac (17-inch, Mid 2006) | IM42.0071.B03 (EFI 1.1) | - |
| iMac (17-inch, Early 2006) | IM41.0055.B08 (EFI 1.1) | 1.1f5 (SMC 1.0) |
| iMac (20-inch, Early 2006) | IM41.0055.B08 (EFI 1.1) | 1.1f5 (SMC 1.0) |
| Mac mini | ||
| Mac mini (Early 2006) | MM11.0055.B08 (EFI 1.1) | 1.3f4 (SMC 1.0) |
| Mac mini (Late 2006) | MM11.0055.B08 (EFI 1.1) | 1.3f4 (SMC 1.0) |
| Mac mini (Mid 2007) | MM11.0055.B08 (EFI 1.1) | 1.3f4 (SMC 1.0) |
| Mac mini (Early 2009) | MM31.0081.B06 (EFI 1.2) | |
| MacBook | ||
| MacBook (13-inch, Early 2009) | MB51.0073.B06 (EFI 1.3) | 1.38f5 (SMC 1.3) |
| MacBook (13-inch, Aluminum, Late 2008) | MB51.0073.B06 (EFI 1.3) | 1.32f8 (SMC 1.2) |
| MacBook (Late 2007) | MB31.008E.B02 (EFI 1.2) | - |
| MacBook (Mid 2007) | MB21.00A5.B07 (EFI 1.1) | - |
| MacBook (Late 2006) | MB21.00A5.B07 (EFI 1.1) | - |
| MacBook (13-inch) | MB11.0061.B03 (EFI 1.0) | 1.4f12 (SMC 1.1) |
| MacBook Pro |
||
| MacBook Pro (13-inch, Mid 2009) | MBP55.00AC.B03 (EFI 1.7) | |
| MacBook Pro (15-inch, Mid 2009) | MBP53.00AC.B03 (EFI 1.7) | |
| MacBook Pro (15-inch, 2.53GHz, Mid 2009) | MBP53.00AC.B03 (EFI 1.7) | |
| MacBook Pro (15-inch, Late 2008) | MBP51.0074.B01 (EFI 1.6) | 1.33f8 (SMC 1.2) |
| MacBook Pro (15-inch, Early 2008) | 1.27f2 (SMC 1.3) | |
| MacBook Pro (17-inch, Early 2008) | 1.28f2 (SMC 1.3) | |
| MacBook Pro (15-inch, 2.4/2.2 GHz) | MBP31.0070.B07 (EFI 1.5.1) | 1.16f11 (SMC 1.3) |
| MacBook Pro (17-inch, 2.4 GHz) | MBP31.0070.B07 (EFI 1.5.1) | 1.18f5 (SMC 1.3) |
| MacBook Pro (15-inch, Core 2 Duo) | MBP22.00A5.B07 (EFI 1.4) | - |
| MacBook Pro (17-inch, Core 2 Duo) | MBP21.00A5.B08 (EFI 1.5.1) | - |
| MacBook Pro (15-inch) | MBP11.0055.B08 (EFI 1.2) | 1.2f10 (SMC 1.0) |
| MacBook Pro (17-inch) | MBP12.0061.B03 (EFI 1.2) | 1.5f10 (SMC 1.0) |
| Mac Pro | ||
| Mac Pro (Early 2008) | MP31.006C.B05 (EFI 1.3) | - |
| Mac Pro (8-core) | MP21.007F.B06 (EFI 1.2) | 1.15f3 (SMC 1.1) |
| Mac Pro | MP11.005C.B08 (EFI 1.2) | 1.7f10 (SMC 1.1) |
| Xserve | ||
| Xserve (Early 2008) | XS21.006C.B06 (EFI 1.1) | - |
| Xserve (Late 2006) | XS11.0080.B01 (EFI 1.0) | - |
| MacBook Air | ||
| MacBook Air (Mid 2009) | MBA21.0075.B03 (EFI 1.1) | 1.34f8 (SMC 1.2) |
| MacBook Air (Late 2008) | MBA21.0075.B03 (EFI 1.1) | 1.34f8 (SMC 1.2) |
| MacBook Air (original) | MBA11.00BB.B03 (EFI 1.0) | 1.23f20 (SMC 1.2) |