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System will not start after install


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... how did you turn off the MBP after installing .9 beta? You could always try soft resetting the firmware. Unplug battery and power adapter. Hold the power button for 15 seconds. Plug back in and turn on. It should cycle back up correctly.

I run an old broken firmware version, so it happens to me after a time, I didn't think anything of it the first time I rebooted.

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