Note that flashlight mode may not be available in sketches that use their own custom libraries. It may have been removed to free up code space.
Team A.R.G. games don't have it but they have a similar safe mode, which is activated by holding both the left button and the up button during power up. Safe mode doesn't light the RGB LED. It just idles with a blank screen instead of starting the game.
Fortunately, it seems that so far all games that cause the upload problem that can be recovered using flashlight mode include it.
Maybe we should maintain a list of the games known to cause the problem, in this topic. For starters: