Can I reinstall ML on a 5D mk II (urgent)?

[made3]

Hi.

(Background)
I have a 5d mk2 (firmware 2.1.2)  magic lantern (ML) isn't running any more for some unknown reason.  I'm using the same CF card with the firmware files installed as per the instructions, the same Cf card that I have had success with previously.  The other day it just stopped working and the regular canon firmware is the only software working on the camera.

(Question)
Can I re-install the ML firmware and run it again?  Could it brick the camera?

Any advise to get my ML working again would be fantastic.  Cheers

[xNiNELiVES]

You dont need to flash the ML firmware anymore. Just put the ML files back on and make it bootable with EOS Card or Macboot.

[made3]

Thank you very much for your reply, I will give that a shot.

[xNiNELiVES]

Yeah just format the card in camera, hit the picture style button to remove ML. If it doesn't come up just format anyways. Then add the files back and make it bootable with EOS card or Mac boot. I retread what you said.