[cinerent]

Do anybody know how to reset to default setting BB 8900 w/o loosing any data?

[Kompressi]

you can save a backup of any data with the blackberry desktop manager. than da the hard reset in the blackberry device menu options

[raja_3012]

Originally Posted by cinerent

Do anybody know how to reset to default setting BB 8900 w/o loosing any data?

By "default setting" do you mean "factory settings"? If yes, then you can wipe the handheld to Options > Security Options > General Settings > Menu Key > Wipe Handheld.