5D MIII Installation Problem

[Airbear112]

I have a 5D Mark III camera with 1.2.3 firmware and am trying to get Magic Lantern installed. I am trying to use a 54GB Extreme Sandisk SD card. When I put the Magic Lantern files onto the card and try to run the update it goes to a loading screen then turns black (with the LED light blinking red once) the camera is then frozen until I remove the battery and turn it back on. I ran Macboot to make the card bootable but the same issue occurred. I have retried all the different steps (formatting the card, trying different installation steps) and the same problem keeps happening. I was wondering if anybody knew how to solve the issue.

Thanks

[walter_schulz]

http://wiki.magiclantern.fm/install
Troubleshooting section, please.

BTW: You know about 5D3's rather slow SDcard interface? It's limited to about 21 MByte/s. SD in 5D3 is used by most people just to startup ML. Recording to CF-card runs about 5 times faster. If card is fast enough.
A startup SD-card will do just fine with 4 MByte free (Yes, it is M as in mega). And slow cards will do, too.

[Airbear112]

I am aware of this. I have multiple CF cards for recording. I am just using the SD card to carry the ML firmware.

[Airbear112]

Nothing on the troubleshooting page has solved the problem. I have tried all other steps to fix.

[tron]

Did you format the card in camera and then copy the ML files from the PC to the SD card?

At least this is what I have done in both of my 5D3s and I had no issue...

[walter_schulz]

He cannot format the card in cam because cam will get stuck with this card.

Format the card using a card reader.
Download latest nightly contents.
Extract contents and copy them to card's root: Autoexec.bin + FIR + ML directory.
Insert card into cam and run firmware update.

[tron]

It was a question not a suggestion! I should have clarified it though because I admit it does not help.

[Airbear112]

Problem Solved, thanks.