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How to overcome UNTRUSTED

How to overcome "UNTRUSTED_CERT_TITLE" during MacOS Recovery?

I am installing a different hdd in a Macbook Pro to give to friend.  After highest security (7 pass) erase  on the original disk, then install of MacOS Sierra I decided to go ahead and upgrade it to a larger used hdd. So after installing the drive and using internet recovery to perform the erase/highest security, I kept getting the error:  "UNTRUSTED_CERT_TITLE", when trying to reinstall MacOS...    (-_Q)   #facepalm

WHATEVER shall I do???

(Hope you'll pardon me... I am including the question I had in my mind, and will respond with the answer I found in a different thread involving OS X Lion Recovery...  it worked for my dilemma involving MacOS Sierra, and if you're having the same problem, you might be glad to come across this solution under the heading of the error you may be receiving... namely "UNTRUSTED_CERT_TITLE".

See below for the easy solution...  )

I am SO thankful to @snevas for posting this information in a different thread:

"The certificate couldn't be verified because a wrong system time (mine was reset to 31/12/2000). You can check by executing `date`  from the terminal (is located under the utilities).

To fix the date execute: `date MMDDHHMMYY` (M=Month, D=Day, H=Hour in 24-hour notation, M=Minute and Y=last 2 digits of year).

After this you can install Mac OS..."

You are so right @snevas!!!  I am installing Mac OS Sierra on that machine as I type my elated response!!!

Blessings!!!

sorry but i dont understand your reply.

where do i find this???

To fix the date execute: `date MMDDHHMMYY` (M=Month, D=Day, H=Hour in 24-hour notation, M=Minute and Y=last 2 digits of year).

This is a command to enter in the "Terminal" app available from the "Utilities" menu in the menu bar while in Internet Recovery Mode. 

If we were performing/entering this command in Terminal right now, since it is 11:58pm (i.e. 23:58) on 10/10/2016, we would enter the following command:    "date 1010235816"        and then hit "enter". 

Now that the system date and time has been corrected, we could try again to reinstall the OS, by choosing "Reinstall macOS" and if the certificate error was due to incorrect date/time, the reinstall should now proceed without a problem.  (See the Apple knowledge base article:  About macOS Recovery - Apple Support  for additional information that might be helpful. 

Hope this helps! 

Blessings!  MegH

Meg, you are the best. it worked. Thanks a lot. Dan

So very glad, Dan!  I was sure thankful to have been pointed in the right direction by the post from @snevas...

Thanks Meg, so glad I found this helpful post. I just changed time on the terminal and it work. thank you

Really glad to hear it, @jktra!  Blessings! 

Thanks Meg and @snevas. Giving my old Macbook pro to my brother in law and came across the same problem. I was a little worried that this may not fix my problem because I was not sure if the machine was new enough to handle Sierra. Tried it anyway and it is downloading Sierra as we speak. Fingers crossed that I do not run into any further issues, but thank you so much for posting this solution.

I ran into that post/solution before finding your post… Unfortunately I am running into this error as well but the big difference is that I had a hard drive failure, so I have a brand-new drive and there's nothing on it, no way for me to get to utilities or get to the date and time… So I really have no idea what I should do.  I am attempting to do an Internet install the new drives there, formatted properly, but when I try to do a reinstall of Sierra it gets that message....since I don't have the utilities folder or any applications at all, I don't know where to even check the date let alone set it… Does it even exist with blank hard drive?

Can someone please help? I was so excited to get this new drive installed and get my life back (haha) but I'm kind of stuck right now unsure how to move forward

1. Connect to wifi, then
2. run

ntpdate pool.ntp.org

You might be running in a different timezone, that should fine.

If you have done an internet restore, you should find Terminal as an option in the menus.

Once you have done this, issue the command

ntpdate time.euro.apple.com

to set the time from Apple's time servers.

You should then be able to continue to install the OS.

Many thanks!! After a few problems to solve the error it works now

Thanks to you for posting it here.   I was stumped by this error. 

最后更新：2017-10-18 00:46:17

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