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Hi all,

Just wanted to chime in: just upgraded my Mac Pro (flashed 4,1 -> 5,1) from Sierra to High Sierra. No workarounds - just followed the standard installer from the app store. After the upgrade was completed, I needed to run an update to MS Office, but that all went smooth. Everything seems to be working.

Dual processor 12 core 2.93 ghz, 32 GB ram, 1 TB Samsung 850EVO ssd, Radeon 5870.
 
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