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Update 840 Evo Firmware using USB drive

L

loscamos93

macrumors newbie
Original poster
Nov 26, 2014
12
0
Hello, I've replaced the superdrive in my iMac with an 840 Evo SSD. Now I have to update the firmware but using an external superdrive does not work. I couldn't find out a way to create a bootable usb with the update. Can someone please help me?
 
loscamos93 said:
Hello, I've replaced the superdrive in my iMac with an 840 Evo SSD. Now I have to update the firmware but using an external superdrive does not work. I couldn't find out a way to create a bootable usb with the update. Can someone please help me?
Click to expand...

My 840 Pro is due to arrive tomorrow, I'm wondering if I'm going to run into the same problem trying to update the firmware.
 
You are not going to be able to do it. You can take the ISO and convert it to a IMG file and then use dd to apply the IMG to a USB drive, or think about using rEFI to make a bootable usb and then copy the IMG contents - but in the end, the firmware updater code is expecting to be run from an optical drive on the esata bus and will not work from usb.

your options are:

1 - boot camp and use windows
2 - pull the drive and put it somewhere where the updater can work
3 - make a partition on the spindle drive and look into rEFI on there - you can then boot from there and run whatever.
 
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