Portal: Still Alive Ending on Xbox 360 / PS3? It Doesn't Exist.

It is impossible to see the "updated" Portal ending (the one hinting at Portal 2 with the Party Escort Bot / Ratman dens) on the Xbox 360 or PS3 versions of The Orange Box. It was never released on those platforms.

The Version Breakdown

• The Orange Box (Disc - 360/PS3/PC): Contains the original 2007 Portal with the original ending only (GLaDOS sings "Still Alive" → Credits → Party Escort Bot drags Chell back inside).
• Portal: Still Alive (XBLA, Oct 2008): A standalone digital purchase. It added 14 Challenge Maps (Advanced/Gold). It did not change the ending cinematic. The confusion often stems from the March 2010 PC Patch (Steam), which updated the ending to lead into Portal 2 (radio signals, Ratman dens, Chell dragged away differently). This patch never came to consoles.
• Portal 2 (2011): Retcons/continues the story. Available on 360, PS3, PC.

How to See the Updated Ending

• PC (Steam): Automatic update. Play through to the end → See the Ratman den / Radio / Chell dragged away → Portal 2 tease.
• YouTube: Search "Portal 2010 Updated Ending" or "Portal Still Alive Ending Comparison".