IPSW · iOS
iOS 17.1.1 IPSW Download (21B91)
Build 21B91, released November 7, 2023 — 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 8.02 GBiPhone15,4_17.1.1_21B91_Restore.ipsw SHA-256 da2a9e331cc10d9cd333cb2511d1d38b68488826171e1c0c4277a6c1f2e37818 
iPhone15,5 8.02 GBiPhone15,5_17.1.1_21B91_Restore.ipsw SHA-256 5ad53006572f4fd4128a9e561ab93eb0632b0d927f64c69bd67c61b813e43f96 
iPhone16,1 8.21 GBiPhone16,1_17.1.1_21B91_Restore.ipsw SHA-256 3ba9cdb9213e8a46c085f48728967cfc723fdaf7946105d99395cd45972e8fd9 
iPhone16,2 8.21 GBiPhone16,2_17.1.1_21B91_Restore.ipsw SHA-256 a60eca60851878cc13a7f01849ee4a634ed8b06a94a52fdbaccfdd1c7c615ff6 
iPhone14,8 7.84 GBiPhone14,8_17.1.1_21B91_Restore.ipsw SHA-256 f33186b1433e67750a4efa387b12bcb4af91c460cbc09e32eed3929286407b79 
iPhone14,7 7.84 GBiPhone14,7_17.1.1_21B91_Restore.ipsw SHA-256 9b10f85bba7378a1802bcd84548f8045e461c11b8f1b0acb10b9e860c8e15e22 
iPhone15,2 8.00 GBiPhone15,2_17.1.1_21B91_Restore.ipsw SHA-256 81f7688000bc8c768e9ebbbdd06ceb2b1b2f2da2ccbcc33e8d9ef3f32cbda393 
iPhone15,3 7.98 GBiPhone15,3_17.1.1_21B91_Restore.ipsw SHA-256 5a8709c185be5cc32169e4745a9a1badf7975a996637e1d64371b23f9ee14fff 
iPhone14,6 7.52 GBiPhone14,6_17.1.1_21B91_Restore.ipsw SHA-256 33e4fde2508227976ff8675f2815d5c8ed8e856556ab3eb34df09fe67774fd17 
iPhone14,5 7.77 GBiPhone14,5_17.1.1_21B91_Restore.ipsw SHA-256 e72948e46b342d1e7a272551274fa0ed3c81e78d75651d0a52e6a9fc5f179089 
iPhone14,4 7.79 GBiPhone14,4_17.1.1_21B91_Restore.ipsw SHA-256 0229dcd3439ff12b336d12ab586c1deec84455e4f02f1e2e9caf7b5358cd9ae5 
iPhone14,2 7.89 GBiPhone14,2_17.1.1_21B91_Restore.ipsw SHA-256 a3c2a30ca3b11f312515f77160c99767ef3d8e07e72eea8c087d53f466e32919 
iPhone14,3 7.89 GBiPhone14,3_17.1.1_21B91_Restore.ipsw SHA-256 79dd1d6de4111ee9ce6b1b2801a37380a54e4984399631380bcfd229f99184a1 
iPhone13,1 7.69 GBiPhone13,1_17.1.1_21B91_Restore.ipsw SHA-256 ee0c902bb0f09d148a1907812509f10f94c4d1868bc9ba9f0eab974173568634 
iPhone13,4 7.82 GBiPhone13,4_17.1.1_21B91_Restore.ipsw SHA-256 6d0fdc965d5ede25baaae36a03914109520225e617c8ae50fd461f293135fa34 
iPhone13,2 7.86 GBiPhone13,2,iPhone13,3_17.1.1_21B91_Restore.ipsw SHA-256 86f640f34d4f6a02d35c903b44bcd85e08520532c9966cb910e14131bffa6e02 
iPhone13,3 7.86 GBiPhone13,2,iPhone13,3_17.1.1_21B91_Restore.ipsw SHA-256 86f640f34d4f6a02d35c903b44bcd85e08520532c9966cb910e14131bffa6e02 
iPhone12,8 7.29 GBiPhone12,8_17.1.1_21B91_Restore.ipsw SHA-256 828e46146401c150ae7b28c9036cc6890f344debb54d4c68206bf9f0b9bc2d39 
iPhone12,1 7.32 GBiPhone12,1_17.1.1_21B91_Restore.ipsw SHA-256 2fdbdda2f1ebd49878f7735e6bdc48ec694753bb6aff6b271dd666705698aa29 
iPhone12,3 7.46 GBiPhone12,3,iPhone12,5_17.1.1_21B91_Restore.ipsw SHA-256 d70c4ff6136c01103cbc307e138cbf272755533a3e894e28dd6b0c05c9fded3c 
iPhone12,5 7.46 GBiPhone12,3,iPhone12,5_17.1.1_21B91_Restore.ipsw SHA-256 d70c4ff6136c01103cbc307e138cbf272755533a3e894e28dd6b0c05c9fded3c 
iPhone11,8 7.43 GBiPhone11,8_17.1.1_21B91_Restore.ipsw SHA-256 c140e3828b5838dc9dcdea293ed666098f487b1ed3e6e8d6e23090874e7a37bc 
iPhone11,2 7.61 GBiPhone11,2,iPhone11,4,iPhone11,6_17.1.1_21B91_Restore.ipsw SHA-256 139a697d11b11ee2ebf9c2e8551aa817a49ad71f7df524d78651476079150736 
iPhone11,6 7.61 GBiPhone11,2,iPhone11,4,iPhone11,6_17.1.1_21B91_Restore.ipsw SHA-256 139a697d11b11ee2ebf9c2e8551aa817a49ad71f7df524d78651476079150736 
iPhone11,4 7.61 GBiPhone11,2,iPhone11,4,iPhone11,6_17.1.1_21B91_Restore.ipsw SHA-256 139a697d11b11ee2ebf9c2e8551aa817a49ad71f7df524d78651476079150736 No device matches.
21B91How to install iOS 17.1.1 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 17.1.1 today?
Not at the moment — Apple has stopped signing 21B91, 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.