: Ensure your computer or smartphone is connected to the HG531 v1 via Wi-Fi or an Ethernet cable.
If you are currently using an HG531 V1 and cannot find a verified firmware file from your ISP, the best course of action is often to ensure your current settings are optimized. Changing the default admin password and disabling remote management (WAN access) can mitigate many security risks even on older software. Update Software in HUAWEI HG531 v1
The HG531 v1 is over 10 years old (VDSL2 17a profile). Modern routers (TP-Link XZ000-G3, Zyxel VMG3925) offer VDSL2 35b super-vectoring, better SNR, and automatic OTA updates. A new router costs $50-$80 and solves all stability issues. : Ensure your computer or smartphone is connected