Apple Mac Studio (M1 Max) macOS 12.3.1 IPSW firmware

Apple Mac Studio (M1 Max) Signed

macOS 12.3.1

Build 21E258 For Mac13,1, J375cAP

Global · IPSW

A newer version is available for this region: macOS 27.2

Download 12.9 GB

File details

Device: Apple Mac Studio (M1 Max)
OS: macOS 12.3.1
Region: Global
Type: IPSW
Install with: How to restore a Mac with Apple silicon (IPSW)
Released: 31 Mar 2022
Size: 12.9 GB
File name: UniversalMac_12.3.1_21E258_Restore.ipsw
MD5: 6c943a751207e9e06ab018a7bb568d40
SHA-1: 81033c922c5d43f57907d063fb01865f4c856b37
SHA-256: cb0443525571ea5e54aa5a8fd9c52774591892311405183741f4a02f993e18d5

After downloading, compare the checksum with the one above. If they differ, the file is incomplete — download it again.

Before you download

Make sure your device’s model number is one of: Mac13,1, J375cAP. You will find it in Settings → About phone, or on the box.
This file is for the Global region. Installing another region’s firmware can remove features or block updates.
Apple devices can only restore versions marked “Signed”.
Back up your photos, contacts and files first, and charge the battery above 50%.

How to install

Macs with Apple silicon (M1 and newer) and Intel Macs with a T2 chip can be restored from an IPSW using a second Mac and Apple Configurator. This reinstalls the firmware and macOS and erases the Mac.

Read the guide: How to restore a Mac with Apple silicon (IPSW)

Other Apple Mac Studio (M1 Max) versions

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