Some older firmware versions have known vulnerabilities (like CVE-2018-7921) that newer universal versions address. Where to Download Firmware Safely
Includes 4 Gigabit Ethernet ports (one of which is LAN/WAN), an RJ11 port for analogue phones, and a USB 2.0 port for storage or printers. Huawei B315s-607 Universal Firmware Free Download
Downloading firmware from untrusted sites can "brick" your device (render it useless). an RJ11 port for analogue phones
Strong Wi-Fi signal covering up to 250 metres . Huawei B315s-607 Universal Firmware Free Download
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