IPSW · iOS
iOS 17.3.1 IPSW Download (21D61)
Build 21D61, released February 8, 2024 — restore images for 25 iPhones, straight from Apple's servers.
Choose your iPhone
25 devices. Each row is one file on Apple's CDN.
iPhone15,4 7.95 GBiPhone15,4_17.3.1_21D61_Restore.ipsw SHA-256 6220c321a50777ac071e0bf1fef138017c5ab24d24973178e32d823756ede3f5 
iPhone15,5 7.95 GBiPhone15,5_17.3.1_21D61_Restore.ipsw SHA-256 0866395a460d94d0d24d32c2336b2dde92780c535d1910d8accb2b16a8db85b1 
iPhone16,1 8.13 GBiPhone16,1_17.3.1_21D61_Restore.ipsw SHA-256 5b4020427f1999e2712966af550bb140e6f1a6368d3ef3d4b165f52d35904231 
iPhone16,2 8.13 GBiPhone16,2_17.3.1_21D61_Restore.ipsw SHA-256 696bb586dfe81b91b8690062826c8e8b2626074de1fb182e6e883550a2eb9fea 
iPhone14,8 7.76 GBiPhone14,8_17.3.1_21D61_Restore.ipsw SHA-256 890966a44779e1badcba39ea402f3889a185131ef7883a198c9ac4df077f9a5f 
iPhone14,7 7.76 GBiPhone14,7_17.3.1_21D61_Restore.ipsw SHA-256 57f18dd9bfb61504259c95e27be5bf9f0f85787146882b8ed5c353121bda120c 
iPhone15,2 7.92 GBiPhone15,2_17.3.1_21D61_Restore.ipsw SHA-256 b83dd5a3d77f0b411838090083d55e39a493084322901d1e82604870b3b493c8 
iPhone15,3 7.90 GBiPhone15,3_17.3.1_21D61_Restore.ipsw SHA-256 742426d22e658c3eef0ddd0f2a0cd95faea1a0f21193b773f8f79e4211546ccd 
iPhone14,6 7.50 GBiPhone14,6_17.3.1_21D61_Restore.ipsw SHA-256 7dfe4d93825ffb4bed9e88ee9d10f4da7754c531968ce7fdab71756a3af1a7e6 
iPhone14,5 7.72 GBiPhone14,5_17.3.1_21D61_Restore.ipsw SHA-256 397191c4be60f7e8a6857f09818361b368c8db4f30bc75572562f08f107b27ba 
iPhone14,4 7.74 GBiPhone14,4_17.3.1_21D61_Restore.ipsw SHA-256 e51a9d0fea0b3426a1f315279fd599c31d0059e34a127e1ff317d606695e1213 
iPhone14,2 7.84 GBiPhone14,2_17.3.1_21D61_Restore.ipsw SHA-256 f490876e668db59759665b3718e70514a51b5a1bd7fe47b5adbf0cee5b527ca7 
iPhone14,3 7.84 GBiPhone14,3_17.3.1_21D61_Restore.ipsw SHA-256 56760b0f24d8e238025bed7205773a6c9e90ec75d101fb37b28cf7e57ac43a50 
iPhone13,1 7.65 GBiPhone13,1_17.3.1_21D61_Restore.ipsw SHA-256 7b595779bb03b2c1c590601a81230c211b68038a4bf870f020b34a36668ecb80 
iPhone13,4 7.78 GBiPhone13,4_17.3.1_21D61_Restore.ipsw SHA-256 94132880bd22bd38e09042b797329a5f13b3f6dddf8a94c88eb81300723f7a65 
iPhone13,2 7.83 GBiPhone13,2,iPhone13,3_17.3.1_21D61_Restore.ipsw SHA-256 be6d3de69a1dc43c83b8de6d98e46a0bd62ced799d5582f42a446991de2cbbb5 
iPhone13,3 7.83 GBiPhone13,2,iPhone13,3_17.3.1_21D61_Restore.ipsw SHA-256 be6d3de69a1dc43c83b8de6d98e46a0bd62ced799d5582f42a446991de2cbbb5 
iPhone12,8 7.29 GBiPhone12,8_17.3.1_21D61_Restore.ipsw SHA-256 ac8a76f501070e1ee1d6bbac33f079b915be8575247df91320495c955e35dd3c 
iPhone12,1 7.32 GBiPhone12,1_17.3.1_21D61_Restore.ipsw SHA-256 17ae5fc4d50912fd10970410819ee535504c7744d29426206c5073c192e47a5b 
iPhone12,3 7.46 GBiPhone12,3,iPhone12,5_17.3.1_21D61_Restore.ipsw SHA-256 2f6cbf0f58a4f226d396b3779ec4a0c75e679d0f05c693ef90dc6b9b49f0a3d3 
iPhone12,5 7.46 GBiPhone12,3,iPhone12,5_17.3.1_21D61_Restore.ipsw SHA-256 2f6cbf0f58a4f226d396b3779ec4a0c75e679d0f05c693ef90dc6b9b49f0a3d3 
iPhone11,8 7.44 GBiPhone11,8_17.3.1_21D61_Restore.ipsw SHA-256 9cb65a2db1d72f2d440d1d4f67607c51ad1481cfb44d1c7dec27580024026d95 
iPhone11,2 7.62 GBiPhone11,2,iPhone11,4,iPhone11,6_17.3.1_21D61_Restore.ipsw SHA-256 969da1332aae395c7fb65c74a228ea204cca31516d0e0adf31178612d7c07828 
iPhone11,6 7.62 GBiPhone11,2,iPhone11,4,iPhone11,6_17.3.1_21D61_Restore.ipsw SHA-256 969da1332aae395c7fb65c74a228ea204cca31516d0e0adf31178612d7c07828 
iPhone11,4 7.62 GBiPhone11,2,iPhone11,4,iPhone11,6_17.3.1_21D61_Restore.ipsw SHA-256 969da1332aae395c7fb65c74a228ea204cca31516d0e0adf31178612d7c07828 No device matches.
21D61How to install iOS 17.3.1 from the IPSW
Four steps, and the one that matters most is the first.
Back up first
A restore erases the device. Make an archived backup in Finder or the Apple Devices app — an iCloud backup taken on a newer version cannot be restored onto an older one. Our backup guide covers the difference.
Get the file for your exact model
Check Settings → General → About → Model Name, then download the IPSW for that device. The download shows the file size; compare it with the SHA-256 under Details if you want to be certain the file is intact.
Restore in Finder or Apple Devices
Connect with a cable, select the device, then hold Option (Mac) or Shift (Windows) and click Restore to choose the .ipsw. Update keeps your data but only works upward; Restore erases and is how you downgrade.
Set up or restore your backup
After the restore the device starts fresh. Restore the backup you made — only if it came from the same or an older version than the one you just installed.
Questions? Answers.
Can I restore iOS 17.3.1 today?
Not at the moment — Apple has stopped signing 21D61, so a restore will be rejected at the final step. The files remain here for reference and for signed re-releases.
Which is the right file for my device?
Match the identifier in Settings → General → About (or under the model's name here) against the one on each row. Wi-Fi and Cellular iPads share a file; different generations never do. Restoring the wrong device's IPSW simply fails — it cannot damage the device.
What does "signed" mean?
Apple's servers must approve a firmware before a device will accept it, and Apple only approves the builds it is currently shipping. A signed file can be restored today; an unsigned one is rejected at the end of the process, however you obtained it. Signing status changes without notice, usually within days of a newer release, which is why this catalogue rechecks it automatically.
Will I lose my data?
A Restore erases the device — that is what makes a downgrade possible. An Update with an IPSW keeps your data, but only when moving to a newer version. Either way, make an archived backup on a computer first; an iCloud backup taken on a newer version will not restore onto an older one.