How To Fix “UNTRUSTED_CERT_TITLE” Error

Among our tips, there is an article about the error “This copy of the program could not be verified …” that occurs during the installation of older versions of macOS (OS X). But this is not the only error that you may encounter when restoring or reinstalling the operating system, another one may appear:

“UNTRUSTED_CERT_TITLE”

I would like to clarify right away that this error does not occur for all users, but only for MacBook owners, in which the battery is very worn out and requires replacement, or the MacBook has been in a discharged state for a long time. To be more precise, for computers that are not able to store the current date, or computers in which you yourself changed it to an older one.

The solution to the problem that has arisen is very simple, you just need to set the correct time. And how to do it, read below.

How to set the current date and time in Recovery mode

  1. Start the Terminal program. To do this, in the top menu bar, click “Utilities” and select Terminal
  1. Using the command, dateyou can see the date set on the Mac, if the date is incorrect, enter the following command in the terminal and let Apple do all the work for you:

ntpdate -u time.apple.com

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In this case, the Mac must be connected to the Internet, otherwise the time will not be updated. If you do not have the opportunity to connect to the World Wide Web, then you will need to set the current date yourself. To do this, use the same command date, only changing its parameters:

date mmddHHMMyy

where mm – month (01-12),
dd – date (01-31),
HH – hours (00-23),
MM – minutes (00-59),
yy – year.

For example, 10:30 on February 1, 2020 will look like this date 020110302020

  1. After setting the current date and time, close Terminal ( ⌘Cmd+ Q) and go back to reinstalling Mac OS, the error will no longer appear

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by Abdullah Sam
I’m a teacher, researcher and writer. I write about study subjects to improve the learning of college and university students. I write top Quality study notes Mostly, Tech, Games, Education, And Solutions/Tips and Tricks. I am a person who helps students to acquire knowledge, competence or virtue.

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