Originally Posted by sg2bg
could you please clarify few things for me here. i'm new to android and still learning. i have sg2 not rooted yet! but it will happen in the nearest future as soon as i know the difference between kernels. from this thread i've learnt that i can root my I9100MULD3 ICS with LP7 kernel, but now what if i want to roll back to GB, do i have to install different kernel? second, some roms that i;ve browsed say that they come with kernel! what does it mean? and, will they(roms) work with LP7 kernel that i will have on my device or i will have to put another kernel again? and finally what is the difference between CF-******LP7 kernel and siyah one? i hope i orgonized my questions well. thanks.
Welcome to the forum sg2bg and thanks for joining.
If you want to go back to gb you won't have to flash a different kernel first. When you flash the gb firmware the kernel will be changed to a compatible one at the same time. You also don't need to worry about compatibility of custom roms with your current kernel as your kernel will be replaced with the one which comes with the Rom when you flash.
Cfroot is pretty much a stock kernel which offers you root access whereas siyah will offer root plus a lot of advanced features.