This is actually a taller task than you might expect because Joker's Vrolik's Syndrome means he can't run too fast or else his brittle bones will shatter. Walking down from the podium and out of the box doesn't count, it only activates when you walk INTO the trigger zone.Дuring the installation process, EDI discovers that the white noise in the Reaper IFF is hiding a signal that's broadcasting the Normandy's location, and when Joker asks to who, the answer immediately arrives: the Collector Ship! With Shepard and the Squad gone, and the crew occupied with defending the ship from the Collectors, it's up to Joker to manually give EDI access to the Normandy's systems and purge the ship of its invaders. You'll know that the Reaper IFF is ready to be installed when EDI mentions it when you walk up to the Galaxy Map by entering the trigger zone (displayed as the orange box in the picture above). So if you only have two Loyalty Missions and two Firewalker Missions, but do the Loyalty Missions first, that will trigger the IFF installation early. Notably, the Journal Check DOES NOT look at DLC such as Overlord, Arrival, Firewalker and so-on.If you run out of these, the Reaper IFF will be ready to be installed. The Journal Check scans your Journal for N7 Side Quests, as well as Dossier Missions and Loyalty Missions from the base game.Once it hits 0, the Reaper IFF will be ready to be installed. The Countdown starts at 4, and ticks down by 1 after completing any Mission, N7 Side Quest or DLC content.What happens is that after leaving the Derelict Reaper, you have activated an invisible Countdown and an invisible Journal Check. However the exact mechanics of this go unexplained by the game. This unique excursion in the game is initiated when the Reaper IFF is ready to be installed into the Normandy.

Mass effect reaper noise