It's alive!!! I found the reason why my key fobs stopped working.
All of you who do not get the key fobs initialized, check the wiring near the right side hinge of the upper tailgate. There is a yellow/white striped wire that goes from the antenna amp to the GM5 module. The wire was broken inside the rubber boot in my X.

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ex X5 4.4 -01 (build 10/00) diamantschwarz metallic

ex 316i -03 Saloon Japan red
ex 316i -90 (two door) hennarot
ex 528iA Tour -97 biaritzblau metallic
ex 318iS Coupe -92 kaschmirbeige metallic
ex 316i -92 vulkangrau