iPhone 6s+ · iPhone8,2

iPhone 6s+ · iOS 15.1

19B74Unsigned

Catalog data · Last updated: Oct 22, 2026, 11:34 PM UTC

Restore IPSW for iPhone 6s+: iOS 15.1, build 19B74.

Firmware information

Version: iOS 15.1
Build: 19B74
IPSW: Restore IPSW
Size: 5.2 GB
Release date: Oct 25, 2021, 8:28 PM UTC
File name: iPhone_5.5_15.1_19B74_Restore.ipsw
Download host: updates.cdn-apple.com

IPSW download

Check the model and signing status before downloading.

Download IPSW

Download hostupdates.cdn-apple.comiPhone_5.5_15.1_19B74_Restore.ipsw

Back up before you restore. A restore can erase the data on the device. The identifier has to match, and a file you can download may still be rejected for restore.

Checksum

SHA-256bcf974cc79c1a13bc87ef6af1971f1e2e951fadfa71ce4007b77eba9531b7130

SHA-1ff7ed58a69c90b318d827c98a61bfbaab6dbcbf0

MD5f615a72971f1498b328821fdc276e608