Unable to install macOS Sequoia update 15.4 on my MacBook Pro

Experiencing an issue with installing the macOS Sequoia 15.4 (24E248) software update. Chip: Apple M1 Pro.

The internet connection and power are stable, and I have rebooted the system multiple times, but the issue persists.

Tried updating both via the GUI and CLI:

• CLI: Prompts for a password, then exits without any error, even when using the --verbose flag.

• GUI: Asks for authentication twice, then returns an error without providing any additional details.

[Re-Titled By Moderator]

MacBook Pro (2021)

Posted on Apr 2, 2025 2:29 AM

Top-ranking reply

LittlebigalanCM

Level 1

44 points

Posted on Apr 9, 2025 6:58 AM

We've been facing this at my workplace. I spent some time testing things and the one thing that actually ended up working is running the following script:

sudo softwareupdate --fetch-full-installer --full-installer-version 15.4 --launch-installer -R

Pretty much pulls the full installer for 15.4 and will download it to your Mac. It should auto launch the installer after (Don't worry it will not wipe the device). If it doesn't auto launch the installer should be in the applications folder in finder.

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184 replies

Jun 1, 2025 10:46 AM in response to KirillRP

My issue is a little different: I have an M1 Mac Mini that has 15.4.1, but it won't upgrade beyond that. It keeps saying it's up to date, yet my Apple Studio is on 15.5.

Old Toad

Level 10

215,238 points

Jun 1, 2025 11:12 AM in response to jasondunn

It too two weeks before my Mac Mini M4 indicated that the 15.5 update was available. It takes a while to get in the queue.

BDAqua

Level 10

250,253 points

Jun 1, 2025 11:59 AM in response to bifang

👍🏽

Apr 12, 2025 6:50 AM in response to stnslv

Similar problem. I don't know what to do.

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Unable to install macOS Sequoia update 15.4 on my MacBook Pro