Firebase2 当前版本 (2.4.2) 尚不兼容 Firebase SDK v3，所有使用新 Firebase 控制台创建的项目只能通过调用访问与 SDK v3 兼容.

Firebase2 in its current version (2.4.2) is not yet compatible with Firebase SDK v3, and all projects created with the new Firebase console are only accessible with calls comaptible with SDK v3.

您想先在旧控制台www.firebase.com中创建 Firebase 后端，然后迁移到新控制台.

You want to create your Firebase backend in the legacy console www.firebase.com first, and then migrate to the new console.

这在 angularfire2 github 的这个封闭问题中有记录:https://github.com/angular/angularfire2/issues/189

This is documented in this closed issue of the angularfire2 github: https://github.com/angular/angularfire2/issues/189