MacBook Pro issues updating to newer OS

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4 points

MacBook Pro issues updating to newer OS

I recently tried to upgrade my 2019 MacBook Pro to Sequoia. Kept getting error message (can't recall original error message), so decided to perform a factory reset. During the reset and specifically with installing the latest available OS, Sequoia, I kept getting a message that "Installation cannot proceed because the installer is damaged".

Here is detailed scenario:

After several tries with Sequoia, I gave up and rebooted to get option to install original OS, Catalina.
Catalina installed successfully
I am now logged into Apple ID
Tried to update to Sequoia via system updates but got same error message (see image)
Deleted installer and emptied trash
Downloaded Sequoia installer via Apps
Same results
Took same steps with Sonoma and got same results

Any advice on why I keep getting this error message ""Installation cannot proceed because the installer is damaged" and how to circumvent this issue?

Thanks

MacBook Pro 16″

Posted on Jan 7, 2025 10:05 AM

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Answer 1

Top-ranking reply

Duyfer Author

Level 1

4 points

Jan 7, 2025 7:49 PM in response to Duyfer

Update: Issue Resolved

The steps below resolved the issue. Capturing here in case others have same issues.

Launched computer in standard mode
Ran disk utility from Launchpad
Ran Firstaid for every "internal volume" that appeared in left rail
- Essentially ensured all volumes were repaired if necessary
Restarted computer
ran Sequoia installer from Launchpad
Installer completed process successfully

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Answer 2

Duyfer Author

Level 1

4 points

Jan 7, 2025 12:51 PM in response to Duyfer

Update: I tried the safe mode installation and unfortunately received a different error message (see image). Here are the details:

Rebooted into Safe Mode and verified through system information
Deleted installer and emptied trash
Downloaded Sequoia again through App Store
Started installation through Launchpad
Proceed for a few minutes and then following error message popped up "an error occurred loading the update"

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Answer 3

Duyfer Author

Level 1

4 points

Jan 7, 2025 12:19 PM in response to leroydouglas

Thanks for the quick input. I have download speeds of over 400 mbps and have tried installing from the apps folder. Haven't tried the safe mode technique yet, but will give that a shot.

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Answer 4

Jan 7, 2025 9:26 PM in response to Duyfer

Duyfer wrote:

• Update: Issue Resolved

Good computing Duyfer , that was the logical next step, well done.

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Answer 5

Jan 7, 2025 10:14 AM in response to Duyfer

Duyfer wrote:

https://discussions.apple.com/content/attachment/b6c4dcb3-9b0a-4022-abb1-af0f1debde0f•

I recently tried to upgrade my 2019 MacBook Pro to Sequoia. Kept getting error message (can't recall original error message), so decided to perform a factory reset. During the reset and specifically with installing the latest available OS, Sequoia, I kept getting a message that "Installation cannot proceed because the installer is damaged".

Here is detailed scenario:

After several tries with Sequoia, I gave up and rebooted to get option to install original OS, Catalina.

• Catalina installed successfully

• I am now logged into Apple ID

• Tried to update to Sequoia via system updates but got same error message (see image)

• Deleted installer and emptied trash

• Downloaded Sequoia installer via Apps

• Same results

• Took same steps with Sonoma and got same results

Any advice on why I keep getting this error message ""Installation cannot proceed because the installer is damaged" and how to circumvent this issue?

Thanks

If your download speed is suspect get on a faster Network.

You can try running the installer from a SafeBoot mode and compare your results

Start up your Mac in safe mode - Apple Support

if you have the full installer ~14.9 GB downloaded, it will be sitting in your Applications folder "Install macOS Sequoia.app" You launch it like any other applications from there.

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