Apple Mac Studio (M1 Max) macOS 15.1.1 firmware
Apple Mac Studio (M1 Max)
Signed
macOS 15.1.1
Build 24B91 For Mac13,1, J375cAP
Global · IPSW
A newer version is available for this region: macOS 27.0.1
Download
14.7 GB
Downloads from updates.cdn-apple.com.
File details
- OS
- macOS 15.1.1
- Region
- Global
- Type
- IPSW
- Install with
- How to restore a Mac with Apple silicon (IPSW)
- Released
- Size
- 14.7 GB
- File name
UniversalMac_15.1.1_24B91_Restore.ipsw- MD5
bfc093317a8a9a5717123c5ffe18009c- SHA-1
b515c07a7322d27f9bc672ef40bc6e3d1b09bea3- SHA-256
f94fb7f03c9fe52d573ff58db9e2c8481cec25fd1a29fe4932f60a6c8c1151e7
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)