IPSW · iPadOS
iPadOS 17.5.1 IPSW Download (21F90)
Build 21F90, released May 20, 2024 — restore images for 24 iPads, straight from Apple's servers.
Choose your iPad
24 devices. Each row is one file on Apple's CDN.
Unsigned
iPad14,8, iPad14,9 7.78 GB
FilenameiPad_Spring_2024_17.5.1_21F90_Restore.ipsw
SHA-256a9c1096b2265331a1aa7e52a051e71e7b161557c78026f1b7c5616865bafce20
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05093/874696CD-507F-40FF-B52D-3F635E8FBB55/iPad_Spring_2024_17.5.1_21F90_Restore.ipsw
Size7,779,588,479 bytes (7.78 GB)
Unsigned
iPad14,10, iPad14,11 7.78 GB
FilenameiPad_Spring_2024_17.5.1_21F90_Restore.ipsw
SHA-256a9c1096b2265331a1aa7e52a051e71e7b161557c78026f1b7c5616865bafce20
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05093/874696CD-507F-40FF-B52D-3F635E8FBB55/iPad_Spring_2024_17.5.1_21F90_Restore.ipsw
Size7,779,588,479 bytes (7.78 GB)
Unsigned
iPad16,3, iPad16,4 8.11 GB
FilenameiPad16,3,iPad16,4,iPad16,5,iPad16,6_17.5.1_21F90_Restore.ipsw
SHA-256e7457772143bbede6c624309a53490b33ec846c4e876a1662f46d0d5bfb214bd
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05091/D1186F9D-5453-45A7-B740-7938CA809FF2/iPad16,3,iPad16,4,iPad16,5,iPad16,6_17.5.1_21F90_Restore.ipsw
Size8,108,462,933 bytes (8.11 GB)
Unsigned
iPad16,5, iPad16,6 8.11 GB
FilenameiPad16,3,iPad16,4,iPad16,5,iPad16,6_17.5.1_21F90_Restore.ipsw
SHA-256e7457772143bbede6c624309a53490b33ec846c4e876a1662f46d0d5bfb214bd
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05091/D1186F9D-5453-45A7-B740-7938CA809FF2/iPad16,3,iPad16,4,iPad16,5,iPad16,6_17.5.1_21F90_Restore.ipsw
Size8,108,462,933 bytes (8.11 GB)
Unsigned
iPad13,18, iPad13,19 7.64 GB
FilenameiPad_Fall_2022_17.5.1_21F90_Restore.ipsw
SHA-2566085bbf5a781fc1a4b69578531edc744d16163ec54f2b4bba3fa63c78cee0b66
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05202/172B4208-6AC0-4928-A5F4-AAF10D73F05B/iPad_Fall_2022_17.5.1_21F90_Restore.ipsw
Size7,639,723,640 bytes (7.64 GB)
Unsigned
iPad14,3, iPad14,4 7.82 GB
FilenameiPad14,3,iPad14,4,iPad14,5,iPad14,6_17.5.1_21F90_Restore.ipsw
SHA-256183e735b187ea3f73e4b3dad13fc2a92e548f6f07e4d4fbba2f8150c18fdf83c
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05291/F639780F-D553-40A5-89A2-B60F8D27DB42/iPad14,3,iPad14,4,iPad14,5,iPad14,6_17.5.1_21F90_Restore.ipsw
Size7,818,368,342 bytes (7.82 GB)
Unsigned
iPad14,5, iPad14,6 7.82 GB
FilenameiPad14,3,iPad14,4,iPad14,5,iPad14,6_17.5.1_21F90_Restore.ipsw
SHA-256183e735b187ea3f73e4b3dad13fc2a92e548f6f07e4d4fbba2f8150c18fdf83c
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05291/F639780F-D553-40A5-89A2-B60F8D27DB42/iPad14,3,iPad14,4,iPad14,5,iPad14,6_17.5.1_21F90_Restore.ipsw
Size7,818,368,342 bytes (7.82 GB)
Unsigned
iPad13,16, iPad13,17 7.64 GB
FilenameiPad_Spring_2022_17.5.1_21F90_Restore.ipsw
SHA-256b976ee550803cd95ade6a649642db6ced4d1edb4d13b76ecf78a65d39830e0ad
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-06596/FA236300-641F-4972-AAFF-856D9718C27D/iPad_Spring_2022_17.5.1_21F90_Restore.ipsw
Size7,643,197,101 bytes (7.64 GB)
Unsigned
iPad12,1, iPad12,2 7.39 GB
FilenameiPad_10.2_2021_17.5.1_21F90_Restore.ipsw
SHA-256040329805cbac420b241d4451555fa9a176f7f6e3c23f00348a5a0c033b28d3c
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-06486/6E34A63E-F16F-488B-8D12-3877209567D8/iPad_10.2_2021_17.5.1_21F90_Restore.ipsw
Size7,386,658,061 bytes (7.39 GB)
Unsigned
iPad14,1, iPad14,2 7.63 GB
FilenameiPad_Fall_2021_17.5.1_21F90_Restore.ipsw
SHA-256fe076253b47cee018751adf6fca19a2a0d472f68166382c7f5af228828771858
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05190/A8B4D932-68BF-41E7-A1BF-34E35B6F23B3/iPad_Fall_2021_17.5.1_21F90_Restore.ipsw
Size7,625,933,781 bytes (7.63 GB)
Unsigned
iPad13,4, iPad13,5, iPad13,6, iPad13,7 7.76 GB
FilenameiPad_Pro_Spring_2021_17.5.1_21F90_Restore.ipsw
SHA-256df2e80f6125bb2686e3866bf839f6a8e90cae068477ccde9f5b7b05f0d88e633
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-06376/F0B40690-E7AB-431F-B7C0-5A94B6BB1387/iPad_Pro_Spring_2021_17.5.1_21F90_Restore.ipsw
Size7,762,224,589 bytes (7.76 GB)
Unsigned
iPad13,8, iPad13,9, iPad13,10, iPad13,11 7.76 GB
FilenameiPad_Pro_Spring_2021_17.5.1_21F90_Restore.ipsw
SHA-256df2e80f6125bb2686e3866bf839f6a8e90cae068477ccde9f5b7b05f0d88e633
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-06376/F0B40690-E7AB-431F-B7C0-5A94B6BB1387/iPad_Pro_Spring_2021_17.5.1_21F90_Restore.ipsw
Size7,762,224,589 bytes (7.76 GB)
Unsigned
iPad13,1, iPad13,2 7.52 GB
FilenameiPad_Fall_2020_17.5.1_21F90_Restore.ipsw
SHA-25690d9a72cbf0d03fb83067c25a212ec8f8cc5aba26da581ab7549505863bd6661
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-06244/282C1EB4-ACBF-47E6-90B0-9AA4D09B9FF2/iPad_Fall_2020_17.5.1_21F90_Restore.ipsw
Size7,524,577,822 bytes (7.52 GB)
Unsigned
iPad11,6, iPad11,7 7.54 GB
FilenameiPad_10.2_2020_17.5.1_21F90_Restore.ipsw
SHA-2564963f3728c00330b10d145a942ab883b42683fb848ce3ecc4771d970ee79fbe0
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05376/582E464B-76EE-4F93-99F2-1C4DC2A32E22/iPad_10.2_2020_17.5.1_21F90_Restore.ipsw
Size7,544,041,047 bytes (7.54 GB)
Unsigned
iPad8,9, iPad8,10 7.88 GB
FilenameiPad_Pro_A12X_A12Z_17.5.1_21F90_Restore.ipsw
SHA-2567f30f40ea9632065d58e209562b8b077d670176e1ffc06d00fe38edd35c4fc8e
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-06222/EF483BDD-AB46-4CF1-B128-0B324910A524/iPad_Pro_A12X_A12Z_17.5.1_21F90_Restore.ipsw
Size7,877,521,209 bytes (7.88 GB)
Unsigned
iPad8,11, iPad8,12 7.88 GB
FilenameiPad_Pro_A12X_A12Z_17.5.1_21F90_Restore.ipsw
SHA-2567f30f40ea9632065d58e209562b8b077d670176e1ffc06d00fe38edd35c4fc8e
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-06222/EF483BDD-AB46-4CF1-B128-0B324910A524/iPad_Pro_A12X_A12Z_17.5.1_21F90_Restore.ipsw
Size7,877,521,209 bytes (7.88 GB)
Unsigned
iPad7,11, iPad7,12 6.86 GB
FilenameiPad_10.2_17.5.1_21F90_Restore.ipsw
SHA-25664c3b852d1e9e7abe695c9c5d8c676294778ed02519e13778c1afed96d3317cf
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05605/8C2D1413-E2F2-4458-9ACD-EA647F1AAEEC/iPad_10.2_17.5.1_21F90_Restore.ipsw
Size6,860,507,819 bytes (6.86 GB)
Unsigned
iPad11,3, iPad11,4 7.58 GB
FilenameiPad_Spring_2019_17.5.1_21F90_Restore.ipsw
SHA-25666b1316cfa8e7bc74874a5627fc015642253d6b03a61f2cda4825714a54c6811
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05818/D72B80DA-746A-4261-AD1E-C5D7B6DA1E93/iPad_Spring_2019_17.5.1_21F90_Restore.ipsw
Size7,584,217,234 bytes (7.58 GB)
Unsigned
iPad11,1, iPad11,2 7.58 GB
FilenameiPad_Spring_2019_17.5.1_21F90_Restore.ipsw
SHA-25666b1316cfa8e7bc74874a5627fc015642253d6b03a61f2cda4825714a54c6811
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05818/D72B80DA-746A-4261-AD1E-C5D7B6DA1E93/iPad_Spring_2019_17.5.1_21F90_Restore.ipsw
Size7,584,217,234 bytes (7.58 GB)
Unsigned
iPad8,1, iPad8,2, iPad8,3, iPad8,4 7.88 GB
FilenameiPad_Pro_A12X_A12Z_17.5.1_21F90_Restore.ipsw
SHA-2567f30f40ea9632065d58e209562b8b077d670176e1ffc06d00fe38edd35c4fc8e
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-06222/EF483BDD-AB46-4CF1-B128-0B324910A524/iPad_Pro_A12X_A12Z_17.5.1_21F90_Restore.ipsw
Size7,877,521,209 bytes (7.88 GB)
Unsigned
iPad8,5, iPad8,6, iPad8,7, iPad8,8 7.88 GB
FilenameiPad_Pro_A12X_A12Z_17.5.1_21F90_Restore.ipsw
SHA-2567f30f40ea9632065d58e209562b8b077d670176e1ffc06d00fe38edd35c4fc8e
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-06222/EF483BDD-AB46-4CF1-B128-0B324910A524/iPad_Pro_A12X_A12Z_17.5.1_21F90_Restore.ipsw
Size7,877,521,209 bytes (7.88 GB)
Unsigned
iPad7,5, iPad7,6 6.85 GB
FilenameiPad_64bit_TouchID_ASTC_17.5.1_21F90_Restore.ipsw
SHA-256b4b44d0d8ce597d8e0d8d910384ba18fc2c253c9f3fea17277d14bd41990792e
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05520/6CD5AE38-75C4-442E-BED0-B3E71A162523/iPad_64bit_TouchID_ASTC_17.5.1_21F90_Restore.ipsw
Size6,853,070,318 bytes (6.85 GB)
Unsigned
iPad7,3, iPad7,4 6.84 GB
FilenameiPad_Pro_HFR_17.5.1_21F90_Restore.ipsw
SHA-256d23b901f4193c06c018a844663915fd7f555dbbc51aa006b188848bba76ed1ca
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05787/EBAFDF56-807D-4E4D-B50D-BEE086DCB0B0/iPad_Pro_HFR_17.5.1_21F90_Restore.ipsw
Size6,839,744,594 bytes (6.84 GB)
Unsigned
iPad7,1, iPad7,2 6.84 GB
FilenameiPad_Pro_HFR_17.5.1_21F90_Restore.ipsw
SHA-256d23b901f4193c06c018a844663915fd7f555dbbc51aa006b188848bba76ed1ca
Direct URLhttps://updates.cdn-apple.com/2024SpringFCS/fullrestores/062-05787/EBAFDF56-807D-4E4D-B50D-BEE086DCB0B0/iPad_Pro_HFR_17.5.1_21F90_Restore.ipsw
Size6,839,744,594 bytes (6.84 GB)
No device matches.
Version
iPadOS 17.5.1
Build
21F90Released
May 20, 2024
Channel
Public release
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iPadOS 17.5
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iPadOS 17.5.1
How to install iPadOS 17.5.1 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 iPadOS 17.5.1 today?
Not at the moment — Apple has stopped signing 21F90, 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.