To update your Huawei B315s-22 with universal (debranded) firmware, you generally need to move through a "recovery" or "force update" process. This allows the router to accept firmware not signed by a specific carrier.
Huawei B315s-22 is a legacy 4G LTE router that remains a staple for users needing a reliable, "set-it-and-forget-it" home gateway. Seeking a is typically a move by power users to "debrand" a router from a specific ISP or to unlock advanced network settings . Firmware Performance & Utility huawei b315s-22 universal firmware download
Standard updates are done through the router’s web interface (Local Update). Debranding often requires a "jumper" method involving opening the device and using a USB cable to flash the firmware in boot mode. Firmware Download Sources To update your Huawei B315s-22 with universal (debranded)