Trying to Update from 13.5 to 13.5.1 or 13.5.2 – "Failed to personalize software update. Please try again."

[Capeto]

Hi all,

Getting this dreaded message (see attached) when I try to update my base model M1 MacBook Air, currently on macOS 13.5, to 13.5.2. I was getting the same error when 13.5.1 was released, and I was hoping the recent 13.5.2 update wouldn't give me this error, but alas.

I've tried every solution I've come across online with no success, including:

• Booting into Safe Mode and updating that way
• Updating via Terminal command
• Downloading the Ventura updater from the Mac App Store and using it to make a bootable USB installer/updater
• Using a different internet connection
• Making a new admin user and attempting to upgrade from that account
• Using Disk Utility to repair my startup disk
• Rebooting
• Turning iCloud Private Relay off
• Connecting to a VPN

Mind you that my other Apple computers (M1 Mac Mini and M1 MBP) did not have this issue at all. I didn't try anything different when I first attempted to update, so I'm not sure what could even be causing it. I read that another possible was bad RAM, but I ran Apple Diagnostics and didn't get an error code.

Is there any way to fix this outside of a full restore?

 

[GlenK]

My 2019 MBP had that but I restarted once then it worked. No issue with Studio.