This is not my scripts, I found them on net, and I want to thank to author :) Using: *** Extracting *** 1) Place a working boot.img into this folder 2) Type: $ ./extract_boot boot.img 3) Done. Now you can see a boot.img-kernel (zImage) and a ramdisk on extracted boot. *** Repacking *** 1) After you done making changes on kernel/ramdisk, type: $ ./make_boot boot.img 2) Done. Now you can see and flash your new boot named "boot-new.img"