If Terminal returns an error saying sudo : command not found, then try again without sudo. Make sure WiFi is switched off, it can reset the date back to today.Įnter a new date, for example or just copy and paste Try this workaround, we are going to set the time and date on your mac to a date previous to the expiry date of the certificates.Ĭonnect your mac to your router via cable, not WiFiīoot to your Recovery HD, click on Utilities in the menubar select Terminal. This may be the problem you are experiencing. The certificates for several of Apples OS's expired in October 2019, Apple have been very poor at getting these updated on their Recovery Servers with valid certificates. If you want to try internet recovery follow this, You will e-mailed a redeem code which you use in the App Store (not the Apple Online Store).įrom macOS Sierra Apple stopped the Purchased section of the App Store showing previously downloaded Mac OS X Lion is only available as a $20 from the Apple Online Store (not the App Store) when you purchase
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