Yes, I hate 2 fly but need some help (for which I've had to register here

). I've read everything in this folder and have checked out the DL, KE, and SkyTeam websites to no avail.
I am flying HNL-BKK-HNL on KE in 6 days. I have 250k miles with DL but no status. I've been booked in N class, whatever that is, and am wondering if I can get an upgrade to business. KE's site says I need 50k to upgrade on a reduced-fair ticket, but none of the sites mention how to go about getting the upgrade.
Thanks for any help. Hope I've given you enough to go on.