While Updating Sad smiley and i formatted the phone dont know which e mail address i registered

[djjohnmtv]

When my phone was updating (Nokia 620) it showed a sad ;( smiley and i had to format my entire mobile .
Now i dont know which e mail i have registered the phone with.

any idea how to get the e mail?

Solutions done.
Asked Nokia. they dont have a clue

 

[WP7Nettwerk]

Try to login with one of your emails: The Smartphone Reinvented Around You | Windows Phone (United States) , than go to Account Settings