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qunwang6/gist:f111d3af088c5651705358abc28b3989

Forked from iambenmitchell/gist:5060ce76189e4514eb69f4d107f0c53f
Created November 12, 2020 12:38
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Fix macOS Big Sur RC update
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gistfile1.txt
The issue is caused by an incorrect software catelog. As apple is releasing big sur thursday, they changed the software catelog to the production one. The problem is that the production one does not yet have the bridge os firmware for big sur just yet. So in order to update right now you need to change back to the devleoper catelog.
//Set software catalog to developer
sudo nvram IASUCatalogURL=https://swscan.apple.com/content/catalogs/others/index-10.16seed-10.16-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog
// Once updated, restore your NVRAM back to default for future updates
sudo nvram -d IASUCatalogURL
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