PSA: Updated Apple certificate means old OS X installers don’t work anymore

Ars Technica
By Andrew CunninghamMar 3, 2016, 2:28 pm814 pts
(credit: Andrew Cunningham) On February 14, something called the Apple Worldwide Developer Relations Intermediate Certificate expired. This sort of thing is typically routine; it was renewed and developers were advised to update their certificates so their Apple Wallet Passes, Mac apps, extensions, Safari push…

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