Have you applied the appropriate firmware update or this one? I'm not sure which applies to your model because I found two MacBook Pros that fit your description.
Last edited by jchuzi; 01/14/12 12:03 AM.
Jon
macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P700, Photoshop CC, Lightroom CC, MS Office 365
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