Kernel_repacker is a project mainly written in C and SHELL, it's free.
Repack a new initramfs into an ARM Linux Kernel
Kernel Repacker Original Idea by dkcldark Cleaned and improved by RyanZA
Remember to set the options for your system at the top of editor.sh
Requires findzeros binary for speed, compile with 'gcc findzeros.c -o findzeros'