: Press and hold the WPS and Power buttons simultaneously until the red light indicator turns on, then release. The router will enter download mode, indicated by specific LED patterns
Before beginning any firmware update:
: Bypassing carrier "tethering" limits by making the router appear as a smartphone to the network. VoIP Settings : Enabling built-in phone ports for SIP calls. HUAWEI Global 2. Where to Download huawei b315s-22 universal firmware download