Because Huawei does not publicly host CPE firmware, you must rely on community repositories. Trusted sources include:
Using the wrong firmware version (e.g., for B312-939 or B315) will permanently brick your device. Double-check the filename. huawei b312926 firmware 10031h192sp9c00 universal updated
Select your router and follow the prompts to check for updates. Important Precautions Because Huawei does not publicly host CPE firmware,
Hard reset again. Then log in to 192.168.8.1 (Username: admin , Password: admin or the device's WiFi key printed on the label). huawei b312926 firmware 10031h192sp9c00 universal updated