only some kernel can be UVed cause jb kernel 1.0.1 and 1.0.2 cant be undervolt .
both jb 1.0.1 and 1.0.2 can be undervolted. I have used cpu tweaks and incredicontrol (both from the play store) to undervolt the
JB kernels....the FXP kernels cannot be easily undervolted and I am not really sure about the szl JB kernels,...