Updating Crucial MX100 firmware installed on Macbook Unibody 13" (Late 2008) OS X

To find out which firmware revision your SSD is running, follow these steps in OSX:

1. Click on the Apple menu
2. Select "About This Mac", then "More Info..."
3. Select "System Report..."
4. In the Contents list, click on "Hardware" to expand the category
5. Click on Serial-ATA (near the end of the Hardware category)

The drive attributes will be displayed on the pane on the right.  You will see the name of the drive i.e. Crucial CTXXXXXXX, the drive capacity etc.  The firmware version will show in the 'Revision' field.

Components:
1. Download Crucial firmware MU02 MX100_MU02_BOOTABLE_ALL_CAP.zip
2. USB flash drive (or SD card) to be formatted as a FAT32 volume.
3. Download GRUB-EFI bootloader files for 64bit EFI.


# Format USB
Using OS X Disk Utility, format the USB drive as FAT32 (MS-DOS).






# Extract the grubefiusb-0.03.zip

Transfer the following files to the USB:

* EFI/boot/unicode.pf2
* EFI/boot/bootx64.efi
* EFI/boot/grub.cfg

 (e.g EFI folder should be in root folder)

 # Extract the Crucial MX100_MU02_BOOTABLE_ALL_CAP.zip, and open the MX100_MU02_BOOTABLE_ALL_CAP.iso using Disk Mounter

Transfer the following foldes to the USB:

* boot
* cde

 (e.g boot folder should be in root folder)

# Reboot the machine with the customize USB (Press and hold Option key at boot time)