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L450 & OS X

Posted: Sun Sep 04, 2016 3:23 am
by mediaproll
Hello everybody,
I'm looking for help to my problem. I want to install OS X (EC or Yosemite) on my Thinkpad L450.
All attempts failed . Now I read that it is recommended the BIOS version should be 1.06. My current version is 1.17.
But a downgrade was not possible. Although I had enabled "possible downgrade"!Can anyone help me?

Thank you all