To easily and safely restore the custom IPSW, here we will introduce an alternate way-using a powerful custom IPSW restore tool Tenorshare ReiBoot, which stands out for its ability to restore/fix/ downgrade operating system without fearing of data loss in a couple of clicks. Even worse, if you misoperated, the device will possibly get bricked. The above python script creates a patched kernel and a shell script to create Ramdisk. iOS 5 ipsw file can be downloaded from which maintains all iOS versions for all Apple devices. To patch the signature checks in kernel, supply iOS 5 ipsw file to kernel_patcher.py. As up to this point, you can implement the iOS 7 interface, notifications system, both App Store & Cydia, better multitasking (App Switcher), and almost everything else that you see on Apple latest firmware.
Basically, it’s a custom-built firmware that brings better interface to your old iPhone.
Many users with an old iPhone 3GS might have heard of a custom firmware called Whited00r.
