Update only the kernel

Dave McLaughlin
Is it possible to only reflash the kernel?

I have tried setting only this entry in the INI file on the SD but it
doesn't work and Android never boots. I end up having to reflash Android at
the same time.

I am not keen on this as it wipes the Android installation and I have to
recreate everything again. 

I wish it was possible to only update in a similar fashion to the same way
mobile phone or tablets get updated.

Has anyone been able to do this?