iOS 26.4.2 (23E261) for iPhone 17
Not signed — cannot be installed
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Jailbreak compatibility
No jailbreak
There is no public jailbreak for iOS 26.4.2 on iPhone 17.
Tip: Beware of sites that charge for a jailbreak or ask you to install a profile. Real jailbreaks are always free and open source.
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Firmware information
Version
26.4.2
Build ID
23E261
Release date
Apr 22, 2026
Upload date
Apr 19, 2026
File name
iPhone18,3_26.4.2_23E261_Restore.ipsw
File size
10.50 GB
MD5
2a99dcdcd8c0af6b78901a81d3d4f91f
SHA1
ad74503cddd37bc6b6145dffd4879437c4cf6c98
Device information
Device
iPhone 17
Identifier
iPhone18,3
BoardConfig
V57AP
Platform
t8150
CPID
33104
BDID
8