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FIRMWARE DETAILS

iOS 15.1

Build: 19B74Oct 25, 2021Restore IPSW
Stable

View details

Filename
iPhone11,8,iPhone12,1_15.1_19B74_Restore.ipsw
File size
6.97 GB
File type
Restore IPSW
Download host
updates.cdn-apple.com
Link availability
Not verified

Source did not report availability

Last link check
Not checked
SHA-256
8b0a4ac3a5b013a0f5ac9d0110c6a371fcf0a2e7a01a8cfbf9759de29582edd4
SHA-1
3238bc170c5b095a6f954a339745b8466fa3f274
Required starting builds
Not reported
Board restrictions
Not reported

Compatible hardware (2)

iPhone 11 iPhone12,1IPSW.me v4 third-party restore observation (retrieval time) · Oct 19, 2026, 10:59 PM UTC
Unknown
iPhone XR iPhone11,8IPSW.me v4 third-party restore observation (retrieval time) · Oct 19, 2026, 10:59 PM UTC
Unknown

Signing is specific to the device and file. A signed build does not guarantee a downgrade or successful installation.

Source provenance

IPSW.mehttps://api.ipsw.me/v4/device/iPhone11%2C8?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 10:59 PM UTC
Record fingerprint: c6e0f8965134a238ac0293b54aa7a3d7

IPSW.mehttps://api.ipsw.me/v4/device/iPhone12%2C1?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: dfb3c714f140c4b30b28633a89b7050d