Power on the router. The signal indicator lights will start flashing, indicating that the firmware package is transferring.
Many ISP-provided firmwares disable this to force you to use their NAT. A modded firmware enables this option in the settings menu. huawei b535232 custom firmware link
Many Huawei hacking tools (like boot loaders and flashers) trigger false positives in Windows Defender. Only download them from trusted developer threads on 4PDA or GitHub. Power on the router
Unlock the phone port for internet-based calling if your provider disabled it. huawei b535232 custom firmware link