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.
使用旧版的 { -brand-product-name } 可能造成现有 { -brand-product-name } 配置文件中保存的书签和历史记录损坏。为了保护您的信息，请为此版 { -brand-short-name } 创建新的配置文件。您可以随时登录 { -fxaccount-brand-name }，在不同的配置之间同步书签与历史记录。