Well that was "the right guide"
optional :
i have installed cssu by terminal more than 3 times you can follow this if you want ( AT YOUR OWN RISK !!!! )

1- make sure you are connected to the Internet
2- add the cssu repository to /etc/apt/sources.list.d/hildonaplication manager.list
-if you want testing flavor add :
deb http://repository.maemo.org/community-testing/ fremantle free non-free
-if you want the stable add :
deb http://repository.maemo.org/community/ fremantle free non-free
4- there is no number four
5- go to x terminal and gain root
6- it should update without errors
7- 8-then wait until it finishes and you need to confirm a notification or 2, after it is done reboot !
9- congratz you have cssu now !
10- remember at your own risk
good luck

./sifo