Modify Ipsw File Site

# Unmount hdiutil detach /Volumes/iPhoneRoot hdiutil create -format UDZO -srcfolder modified_root modified_fs.dmg Rename to Restore.ipsw mv modified_fs.dmg Restore.ipsw Rebuild the IPSW zip zip -r custom_firmware.ipsw *

Technically, yes. But there’s a catch: Apple’s cryptographic signing process . If you change even one byte, the file will no longer be valid for a standard restore on modern devices. modify ipsw file

If you modify the IPSW without also exploiting the (A5–A11 chips, iPhone 4s–X), the restore will fail with error 3194 or -1 . modify ipsw file

The Deep Dive: How to Modify an IPSW File (And Why You Probably Shouldn’t) modify ipsw file