error installing sierra from internet recovery mode everytime
can someone help? I do not know what it is saying either, as i bought it in hong kong. It gets this error. I wiped my macbook pro recently, and i have been getting this error trying to reinstall sierra every time from recovery mode.I
MacBook Pro
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. This may be the problem you are experiencing.
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.
Boot to your Recovery HD, click on Utilities in the menubar select Terminal.
Enter a new date, for example or just copy and paste
sudo date -u 0114210018
press Return
enter your password
press Return
Now try downloading the OS.
If this works then when the OS is installed and booted up you can Open System Preferences> Date & Time
and reset the time back to today.
If this does not work let me know.
Not being able to read the language in your screenshot, it's difficult to know what type of error you're getting.
You might try Internet Recovery a different way. Restart using Shift+Option+Command+R. This should let you install the OS that your Mac shipped with. This way you should be able to have an OS installed. You might be able to change the Language code to English too.
If you still can't install an OS, then it's possible the hard drive is failing or has failed. In that case, you might try plugging in an external USB drive and install to that.
internet recovery installing sierra error
