Prepare workspace

An iOS multi-boot can rapidely become a mess, it must be done in a structured way. Create a folder named "[Device] Multi-Boot" in a place you will remember on your computer. In that folder, create a new folder for each secondary iOS versions that you plan to install on the device. In my case, I will only create an "iOS 6.1.3" folder. In each iOS folders, create two folders, "Stock" and "Patched". The "Stock" folder will contains original files and "Patched" folder will contains modified files.



From the extracted .ipsw file, transfert the kernelcache file to the "Stock" folder of the corresponding iOS version.

Go to /Firmware/all_flash/allflash.[BoardID].[Build Type] and copy the following files to the "Stock" folder created previously.

applelogo.[...].img3

recoverymode.[...].img3

DeviceTree.[...].img3

iBoot.[...].img3

LLB.[...].img3

manifest

The content of the "Stock" folder should be similar as the following screenshot.

> Part 3: Decrypt firmware images