Apple Event: May 7th at 7 am PT
Hi
I have tried multiple times to download the OS but every time i get message that
This copy of the Install macOS Sierra.app application is damaged, and can't be used to install macOS.
I have validated that i have enough RAM and diskspace when download happens. More than 3 GB RAM and 35 GB disk space is available.
MacBook Pro (Retina, 13-inch, Mid 2014) 2.6 GHz Intel Core i5
Thanks
Vishal
MacBook Pro with Retina display, OS X El Capitan (10.11.6)
I think I have the answer.
Summary
1. Turn off SIP
2. Install High Sierra
3. If you enjoy pain, turn SIP back on.
Detailed steps
1. Restart the computer
2. Immediately hold down CMD+R and release it when the Apple logo appears.
3. Select Utilities | Terminal from the menu bar
4. On the command line type “csrutil disable”
5. On the command line type “reboot”
6. Download and install High Sierra
If you enjoy pain in your nether region, repeat steps one through five, but type “csr enable" in step four. We’ve been running OS X without anything resembling SIP for years and years, so it is probably safe to run without it.
The fix for me (as others mentioned):
1)Build bootable macOS USB disk
2) Boot to USB
3) Launch Terminal and run "ntpdate -u time.apple.com"
4) Install MacOS
Try to set the date to actual date via terminal. You have to type something like this: date 0712122318 in the [mm][dd]HH]MM[yy] format
The fix for me (as others mentioned):
1)Build bootable macOS USB disk
2) Boot to USB
3) Launch Terminal and run "ntpdate -u time.apple.com"
4) Install MacOS
Thanks, it helped me with an error "The Recovery Server Could Not Be Contacted"
Thanks slvrstrk. Updating the time and date via NTP in the terminal worked for my High Sierra install.
🙂
Thank you man for taking the time to tell us about this. It was really helpful. I was getting scared about Not being able to install Mac OS on my new SSD!
Mac OS sierra app is damaged
