Default [Q] How to install default apps in upgrade

I would like to know how to install apps in android upgrades like as if it comes factory installed in original phone.

Like if we buy a new phone there are apps as default which cannot be uninstalled, how to run upgrade with select default, uninstallable apps.

I was looking to update the recovery but getting error "signature not verified, whole file" kinda error, how to get over it ?
I have already rooted phone with "super one click" do i need to use moto RSD lite, if yes please send me link for the the 'sbf' file.

thanks in advance

hyip