To update the firmware on your , you can follow these steps to ensure a "proper" and safe installation. Please note that many ISPs (like Orange or WE) push these updates automatically, but you can check or update manually if you have the firmware file. Update Procedure
Moreover, if you are using the H188A as a bridge to your own router, an old firmware may strip VLAN tags, breaking internet connectivity. zte h188a firmware update upd