You dont have to update aboot to use bumped recovery....
Sent from my LG-D802
here is the way to sign the recovery with LG keys for original JB/KK bootloader.
LOKI is no longer needed.
have fun. you can BUMP all of your images, and forget about loki.
Attached my work folder.
this is not for USERS!!! dont ask how to use if you cant understand.
it's for DEV.