Using an older version of { -brand-product-name } can corrupt bookmarks and browsing history already saved to an existing { -brand-product-name } profile. To protect your information, create a new profile for this installation of { -brand-short-name }. You can always sign in with a { -fxaccount-brand-name } to sync your bookmarks and browsing history between profiles.
Usar una versión vieya de { -brand-product-name } pue toyer los marcadores y l'historial de restolar que tean guardaos nun perfil esistente de { -brand-product-name }. Pa protexer la información, crea un perfil nuevu pa esta instalación de { -brand-short-name }. Siempres pues aniciar sesión en { -fxaccount-brand-name } pa sincronizar los marcadores y l'historial de restolar ente perfiles.