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how do I update my mac it will not update from High sierra
iMac 27″, macOS 10.13
Sorry to report High Sierra is the last macOS available for this unit
Sorry to report High Sierra is the last macOS available for this unit
Welcome, erins435, to Apple Support Communities!
What year was your iMac 27″ model released?
Please provide the Model and Sub-Model, from the About this Mac panel:
mid 2011, and per apple it is non supported
won't update os
