Originally Posted by
flyerCO
You need the correct upgrade space on the KE flight. In this case same as an award for business. KE is known for releasing very few if any seats for awards.
Also, KE has always imposed long blackout periods on award space, so try to check their current policy which might preclude ever being able to upgrade your flight. If there won't be upgrade/award space, it's pointless to keep checking for it and you might want to consider trying to purchase an upgrade.