This is an english forum. As a sign of good manner, you should write in english
The news on Atari Legend says "All previous versions spread around (by Superior, The Medway Boys or the Replicants) offered only v1.0 of the game. Because of a serious bug in the mission 0002/level 2, Captive can not be completed. Fortunately Mindscape released another version (1.2), which corrected the problem"
According to this statement, 1.2 has the bug fix and not 1.1. I'd like to know the reason why 1.1 was released. I don't see why Mindscape would release 1.2 if the changes were barely noticeable.
So, indeed, perhaps version 1.1 never saw the light of day. That's something to investigate and asking around is a good start.