How to fix signature errors when upgrading macOS

MacOS operating system after launch has brought extremely interesting experiences to users such as using Siri virtual assistant on the machine, upgrading Photo applications, . However during the process of upgrading the operating system macOS, it is very easy for you to encounter some errors leading to the installation failure. One of those errors is signature error when installing macOS.

This error may be due to the macOS installation process, your device automatically jumped to time 2010, while the latest version of macOS was released in 2016, causing an error when installing the operating system. . In the article below, we will guide you how to fix signature errors when installing macOS.

Note to readers, before reinstalling the operating system, back up all the necessary data on the device.

How to fix signature errors when upgrading macOS Picture 1

Step 1:

We launch the macOS operating system installer, then click Utilites to open the Terminal .

How to fix signature errors when upgrading macOS Picture 2

Step 2:

The Terminal window appears. Next, enter the date command in the interface window as shown below, to check the time being installed on the device.

How to fix signature errors when upgrading macOS Picture 3

Step 3:

In case the time is not correct compared to the current date, we correct the order as shown below. Accordingly, the order in Figure 0106140817 means the device is adjusted to January 6, 2017, 14:00 am PST time.

How to fix signature errors when upgrading macOS Picture 4

Step 4:

Finally, turn off Terminal to reinstall macOS on the device.

So we have fixed the signature error when installing and upgrading macOS operating system already. Just change the time back to the current date and time on the device and the error will not appear. Finally, proceed to upgrade macOS on the device again.

Refer to the following articles:

Instructions on how to install macOS Sierra (clean install) 10.12 on Mac

How to create a MacOS Sierra installed USB drive 10.12

Old Mac acceleration runs as fast as when you first bought it with these tips

I wish you all success!

Samuel Daniel

Update 25 May 2019

You should read it

May be interested

How to turn off the Macbook login when opening the device from the Sleep state
when the user opens the macbook from the sleep state, you will need to enter the password to use it again. however, we can turn off the requirement to log in to the mac from the sleep state easily.
Instructions on how to customize the lock screen on MacBook
the lock screen or the login screen of the macbook will usually have that default interface to blur the background. however, if the user wants to change the interface for the lock screen, it is very simple.
How to enlarge the window in OS X El Capitan does not overflow the screen
normally the screen magnification mode on the mac will be in overflow mode. however, sometimes you want to zoom in on users' preferences without having to be in full screen mode to switch to traditional zoom mode.
How to use the new Night Shift feature on macOS Sierra 10.12.4
macos 10.12.4 is a new version of the upgraded operating system on macs with some new features, including the night shift feature.
How to set up a Mac does not fall into a 'sleep' state
macos has set the mode to allow the machine to automatically switch to sleep state to reduce energy usage and save battery power when not performing any operations on the machine. however, in case you want to extend the operating time of the mac, how?
How to schedule automatic shutdown on macOS
on macos, there is a feature to set the time to automatically shut down shutdown, put the device into sleep sleep state or restart restart automatically. or users can set up any time for the mac to shut down automatically.