Originally Posted by
chejus
that is an alternative, the issue is....maybe at the airport they say "in order to upgrade you must pay USD 10.000" and then I won´t have a chance, so I would like to be able to secure the upgrade before the check in date.
The problem is that there may not be any upgrades available prior to check-in. EK gamble that there may be some last minute bookings, so leave the seats open until as late as possible. Your only option may be to upgrade using points at the airport - and that's a big risk as there may not be any seats available at that time. Even then, you may only get your upgrade at the last minute (during boarding).