Yes i wiil execute the lastest db_update from the SVN. I will send my database to you.
Their are no modifications of this, its the original database from 1.2.6 to convert 1.3 with db_update

No all characters are not convert.
They are in type: éèà....

You can view this here

In the futur, if he are a modif of db_update for convert all data of database in UTF-8???