Finally the system found the package .
Unfortunately, going through apt-get install mp-fremantle-community-pr=21.2011.38-1Tmaemo7.2+thumb0 didn't brought me to a stable system, as it suffered from rebooting dued to some process starting as quailman said some posts before (I'm not worried though, as I have a solid backup still keeping me up).
I guess my choice could be modifiying by hand the .sh script you put on the discussion months ago (the one I was referring to a couple of posts ago) and let the script do the work, installing all the new packages.
As you can imagine, I already followed the guide that brings HAM to add repositories and then start the community-ssu-enabler, but this just gets stuck telling me that "community-ssu-enabler is already installed".

Well, if you could be so kind to help me, I would appreciate it. Nonetheless, I'm surely not that desperate .