iOS 26.5.1 (23F81) for iPhone 17

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Firmware Information

Version 26.5.1

Build ID 23F81

Release Date Jun 1, 2026

Upload Date May 28, 2026

Filename iPhone18,3_26.5.1_23F81_Restore.ipsw

File Size 10.57 GB

MD5 fcee02dd10a04b054682df645864b3db

SHA1 602258b77dabf46353051ab85edbc2263ca570e5

Device Information

Device iPhone 17

Identifier iPhone18,3

BoardConfig V57AP

Platform t8150

CPID 33104

BDID 8