I will try to boot Xell again and if it does not work... give up. I am waiting for a new chip to try (Xell now is flashed and tested that is ok).
I tested the original nand (untouched) when all the cables were soldered (no CR connected) and after the tries disconnected it, flash again original nand and 0022.
All the rest of the story is due to my seek for the solution. If you read all the post you will see... solders became uglier, patience is lower... but the symthoms are now exactly the same.
There are many people with the same problem, people who prepared a lot of boxes without problem but...
I even found a guy in a forum that was sure that the LDV moved after the tries... 0022, 0022... and at the end he got Xell and the LDV was not like his original NAND.
Who knows... and I do not know if we will know.
Anyway, thanks for your help.