Do you have a or are you comfortable opening the device if a simple web-update doesn't work?
On newer EMUI router layouts: Choose > System > Local Update . Step 3: Upload the Firmware File huawei b312926 firmware 10031h192sp9c00 universal link
Before flashing any firmware, it is vital to understand the hardware you are working with. The B312-926 is a Cat4 router capable of 150Mbps download speeds. Network Support: 4G LTE FDD/TDD and 3G UMTS. Connectivity: Single GE LAN/WAN port and Wi-Fi 802.11b/g/n. Do you have a or are you comfortable
Huawei B312-926 , the specific firmware version 10.0.3.1(H192SP9C00) huawei b312926 firmware 10031h192sp9c00 universal link
: Compatible with the HUAWEI AI Life App (Android) and HUAWEI SmartHome App (iOS) for remote management.