HA super Lisa,
profite bien de ton 8520, c'est un outil presque incassable, super pratique.
to non-French speaking readers:
original poster (OP) lost her email address. so she had to create a new BBID, and then assigne the new BBID to her 8520. This requires to wipe the device, then restore with a backup.
It took some time, but it's done now.
The search box on top-right of this page is your true friend, and the public Knowledge Base too: