The EFI partition is used when the firmware is updated.
Error while writing firmware updater for EFI.
Thus, I've no idea why High Sierra installer failed to update the EFI firmware at the very first time.Īccording to the chapter 2.0 How Does a Mac Update Its EFI Firmware & How Do You Find Your EFI Version of The Apple of Your EFI, with the following command bless, the file MBP91_00D3_B0C_LOCKED.scap extracted from mac2015002efiupdate.dmg, which downloaded from, and the file MBP91_00D7_B00.scap extracted from Install macOS High Sierra.app, it executed successfully. usr/libexec/efiupdater finished with status: 0 Writing firmware update installed cookie (/Volumes/MacSSD/macOS Install Data/.FirmwareUpdateInstalled) Volumes/bless.YdD7/EFI/APPLE/FIRMWARE/MBP91_00D7_B00.scap created successfully If look into previous log of EFI updating, it seems they are quite normal. Operation: Verify firmware failed, Failure Reason: Error Domain= Code=512 Key info in ia.log is as following.Ĭlearing automation and attempting to rebless.įailed to get disk for UUID specified for rebless. Here comes the detail.Īttempt 1 - update it by updating macOS from 10.12.6 to 10.13.2įailed with error message "An error occurred while verifying firmware". The program offers three years coverage from the initial retail sale of the MacBook Air unit.In short, the firmware cannot be updated either by upgrading macOS to High Sierra or by bless manually. The recall program does not include the MacBook Air's standard warranty coverage. People can reinstall their original operating system version through the Mac App Store. Data backup is important before users head out for this MacBook Air service. The company also recommends contacting Apple Technical Support to find out about local service options. People can set up an appointment through Apple Retail Store or they can search for an Apple Authorized Service Provider. As much as possible, Apple encourages people to schedule data backup regularly until the company has replaced the drive.
The tech giant strongly recommend that affected users do not install any updates on their operating system. Users directed to Apple's web page following firmware update should proceed to Replacement Process section to get their drives exchanged.
Affected models include those sold from June 2012 to June 2013.Īccroding to Apple, an Apple Authorized Service Provider (AASP) will provide the free storage replacement. Those using affected MacBook Air models will be directed to a page following firmware installation. This details how users can replace their faulty drive. To check if the drive is affected, proceed to Mac App Store, click Updates and select MacBook Air Flash Storage Firmware Update 1.1.Īpple also started the Flash Storage Drive Replacement Program. People can also access the update from the Apple Support site. The firmware can be downloaded from the Mac App store. If the drive fails to update then Apple will recall the drive for free. As mentioned, the update evaluates the drive and in most cases installs the latest firmware to address the problem. The recall program was announced when Apple discovered a part of the flash storage drives found on MacBook Air models leading to data loss. The company has also issued an announcement recalling a number of MacBook Air models from last year.Īpple recommends the update for mid-2012 MacBook Air models. However, for some, they may need to request to replace the drive. In many cases, the update will only install the latest firmware to solve problems. The update looks for issues resulting to data loss specifically for the 64 and 128GB models. Apple recently released their MacBook Air Flash Storage Firmware Update 1.1 to fix data loss and similar problems for mid-2012 MacBook Air.