I’m trying to create a custom ipsw to bypass iCloud activation lock.

I’ve converted the ipsw to zip, extracted the filesystem dmg(the biggest). But here comes the issues, from A12 and later device the dmg image are no longer encrypted but they are read-only dmg. I copied the files from the dmg to a new folder which gave it rw permission, patched the setup.app file but when I try recreating a new dmg from the folder; I encountered an error where by there’s an EFI partition included in the new dmg even when I initially set it to APSF.

Code: hdiutil create -layout GPTSPUD -fs ‘Case-sensitive APFS’ -volname DawnF21F90.N841OS -partitionType Apple_APFS -srcfolder /Users/apple/Desktop/extrated_dmg -format ULFO -o test4.dmg -verbose

I asked chatgpt and it says that’s because hdiutil creates dmg for Macos only so the EFI partition is necessary but for idecives same format doesn’t apply