If any user asks for the requirements of any specific thing (like requiring a newer kernel version for installing Android Lollipop), is it off-topic? The user is just asking the requirements, not the actual procedure. It is related to Android, and is a question commonly asked by enthusiasts to further enhance their knowledge about Android. I have read the rules here, and this is no exception, but a similar question was recently marked as off-topic. The question can be found here. If this is off-topic, then please tell me how it is violating the rules and regulations present here. Thanks in advance.
I reopened the question. I agree with you that it was just a bit unclear but does seem to be about using an old kernel with a new ROM, which is fully within our purview. If the user wants to know how to create a custom ROM based on that it would be of-topic, but we give the benefit of the doubt.
Do note that closure is intended to be a temporary state before either deletion or editing and reopening (which is why it now says "on hold"). Quick closure is generally a good thing since it decreases a post's visibility a bit, so it won't gather downvotes while it's being improved and doesn't gather answers focused on the wrong thing. It is always fully reversible and editing a closed question always nominates it for re-opening.