iOS 17.5.1 (21F90) for iPhone SE (2020)

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iPhone SE (2020)

✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

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This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore. The instructions below are included for reference only.

Windows

  1. Install the latest version of Apple Devices from the Microsoft Store.
  2. Plug your iPhone SE (2020) in to your PC.
  3. Open Apple Devices, and navigate to your iPhone SE (2020).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone12,8_17.5.1_21F90_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone SE (2020) to reboot.

macOS

  1. Plug your iPhone SE (2020) in to your Mac.
  2. Navigate to your iPhone SE (2020) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone12,8_17.5.1_21F90_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone SE (2020) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone SE (2020) in to your PC.
  3. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  4. To perform a full erase restore, type idevicerestore -e iPhone12,8_17.5.1_21F90_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone SE (2020) to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone12,8_17.5.1_21F90_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 45581f060f3ff5ae068b7ff173d0d5adc10382b4. If it doesn't, you may need to redownload the file.

macOS

  1. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  2. Type openssl sha1 iPhone12,8_17.5.1_21F90_Restore.ipsw
  3. The output of the command should match the following checksum: 45581f060f3ff5ae068b7ff173d0d5adc10382b4. If it doesn't, you may need to redownload the file.

Linux

  1. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  2. Type openssl sha1 iPhone12,8_17.5.1_21F90_Restore.ipsw
  3. The output of the command should match the following checksum: 45581f060f3ff5ae068b7ff173d0d5adc10382b4. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum55fb54c08b0581d54a45da07f6022224747403f375c04c71aa0147ac83b7573a
MD5sum55fb54c08b0581d54a45da07f6022224747403f375c04c71aa0147ac83b7573a
SHA1sum45581f060f3ff5ae068b7ff173d0d5adc10382b4
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

This update provides important bug fixes and addresses a rare issue where photos that experienced database corruption could reappear in the Photos library even if they were deleted.

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