Apple iMac 24-inch (M1, Two Ports, 2021) macOS 12.5.1 firmware
Apple iMac 24-inch (M1, Two Ports, 2021)
Signed
macOS 12.5.1
Build 21G83 For iMac21,1, J456AP
Global · IPSW
A newer version is available for this region: macOS 27.0.1
Download
13.1 GB
Downloads from updates.cdn-apple.com.
File details
- OS
- macOS 12.5.1
- Region
- Global
- Type
- IPSW
- Install with
- How to restore a Mac with Apple silicon (IPSW)
- Released
- Size
- 13.1 GB
- File name
UniversalMac_12.5.1_21G83_Restore.ipsw- MD5
3d5f06ed500a29f29f82318e0e7fbe4b- SHA-1
478eca5466157a6eef5cdba8f75884b224c6d3f6- SHA-256
97a5c61e21e9ddf25158ec9dca67b482205f9dd311d274a1a59915b4bb042c83
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: iMac21,1, J456AP. 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)