One of the Mac users tried to install Sierra multiple times. But error message will show on screen. The error message is “The installer payload failed signature check”. Tried several methods like recreate the installer USB stick, internet recovery,. Try the below suggestions to resolve the error issues.
Solution 1: Change the system date and time
If you don’t have an internet connection,
- Close the installer. Go to the Utilities menu and open a Terminal window.
- Enter ‘date’ to know your system date and time.
- If your system’s date and time is wrong then enter ‘date <month><day><hour><minute><two digit year>’
- Now a window will display with new system date and time.
- Close Terminal and reopen again the macOS Siera installation.
How to change date and time on older Mac version
Try to reboot your Mac. Go to Apple Menu -> System Preferences and change your date and time.
Reboot your USB boot disk.
If you don’t have OS on your Mac follow the steps to rectify the error.
- Open Utilities and select Terminal.
- Enter date in the prompt. Now you view the date of your Mac.
- If you have an internet connection on your Mac, go to online and check current date and time. By going into prompt, and enter ntpdate-u time.apple.com. Click Return.
Now, you will find the current date and time.
Solution 2: Use ntpdate command
Use ntpdate command in the recovery system to update your system clock.
ntpdate – u time.apple.com
Now, reopen the OS X installer.
SEE ALSO: macOS Sierra email not working? Here’s how to fix it
Solution 3: Copy the files to the USB drive
If the InstallESD.dmg file was not copied to the USB drive, this error will occur. Open the terminal and run the diff command. Go to the Application directory and copy the below files into the USB drive.
If the result of the binary files is dissimilar, run the next command.
Note: Enter sudo command for the Administrative Password.
Delete the previous downloader installer and again re-download it through AppStore. Search “Sierra” and click download. Alos check whether the previous downloader gets deleted.
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