![]() ![]() ![]() Used Software Update to upgrade from Big Sur to Monterey. If you're trying this, DON'T install the post-install patch now if looking to upgrade to 12.0 Monterey. Used the OpenCore Patcher to upgrade from Mountain Lion to Big Sur. Installed with a decent SSD - getting about 480 Reads in BlackMagic Disk Speed Test.Įdit: Should add here that I flattened the install back to OOBE via the internet recovery. Replaced these, amazingly they still make the charger. Found the issue was both the 1-way chip in the MagSafe AND the battery had died. Figured this could be of use to someone.I rescued a mid-2012 13" MBP from the recycling pile.
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