IPSW Downloads

macOS 26.3.1 - 25D2128 for Mac15,5

This firmware is signed. This means that you can restore to it in iTunes.

Release Date04 March 2026
Upload Date27 February 2026
File NameUniversalMac_26.3.1_25D2128_Restore.ipsw
File Size18.00 GB
SHA256sum4ff171ba3fa6db4758a2a7cedc8f24d44f4e3de8051a84400984872619abd6bc
MD5sumd928ee10bc9faccb8c88ab971c0a6d03
SHA1sumd7fd6eded02a7534581e4bee5f25ba9784cce408
IdentifierMac15,5

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your Mac15,5 to your PC.
  3. Open iTunes and navigate to your Mac15,5.
  4. Hold the Shift key and click "Restore".
  5. Select the UniversalMac_26.3.1_25D2128_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your Mac15,5 to reboot.

macOS

  1. Connect your Mac15,5 to your Mac.
  2. Navigate to your Mac15,5 in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the UniversalMac_26.3.1_25D2128_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your Mac15,5 to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your Mac15,5 to your PC.
  3. Open a terminal and navigate to the IPSW file you downloaded, e.g., cd ~/Downloads.
  4. To perform a full erase restore, type idevicerestore -e UniversalMac_26.3.1_25D2128_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your Mac15,5 to reboot.