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I want to start with the Crucial SSD Firmware Update and copy the ISO to a bootable Mac USB stick, using a minimal set of tools. I hope that means using only built-in Mac software, such as Disk Utility and Terminal for commands. If necessary, I will reluctantly use a commercial tool. (As of this writing, the latest is

I've have waded through a muck of articles about how to copy an ISO to a bootable USB stick, but I have not found a solution that works and that I'm comfortable trying.

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Patiently waiting for an answer as well since I have a Crucial m4 and just discovered that the Superdrive in my MBP is no longer functioning :( – EmmEff Feb 27 '13 at 21:50
Macs are quite challenging to create bootable USB sticks for (unless of course you're booting an OS X variant, in which case it's quite simple). My recommendation unfortunately is to go to an Apple Store and ask a Specialist if you can borrow a USB SuperDrive for a few moments with them. You can then burn a blank DVD (that you bring with you) and boot this way. Wish I had a better suggestion. – bispymusic Mar 2 '13 at 20:16
Can you try this and see if it works for you? – Stephen Jun 20 '13 at 16:46
@David James Please let me know if that link works for you? – Stephen Jun 20 '13 at 20:32
@Stephen Why not post your answer as an answer? – David James Jun 21 '13 at 3:51

3 Answers 3

I downloaded the and followed this tutorial and everything seemed to work for me. I hope this helps.

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And were you able to boot from the USB drive after that? – jmk Jul 27 '13 at 18:24
Yes I was able to boot from the USB drive. – Stephen Jul 29 '13 at 14:43

This does not answer the question directly but it applies to a very similar problem. I faced the same issue recently when trying to update the Firmware of my Samsung EVO 840. The people at Samsung who wrote the instructions for OS X are either trolls or have no knowledge of the subject.

I also tried countless ways of making a bootable USB with the firmware (also with rEFInd), but eventually it became clear that the only viable way was to burn it to a CD or DVD and boot from it. In case you have an optical drive (external one does not work), you could try the same. Steps are outlined here.

Disclaimer: Try this at your own risk.

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Try downloading a bootloader called rEFIt to boot the USB. Delete the EFI folder in the Hard Drive Root folder to remove it.

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Could you enhance your answer by adding a link for rEFIt and more detailed instructions on how to proceed after the download? – patrix Jul 27 '13 at 14:59

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