It looks like you’re referencing a cracked or “hot”/“extra quality” download for the ZTE ZXHN F670L firmware.

Enhanced Wi-Fi Stability: Fixes "ghost" disconnections on the 5GHz band.

Change Wi-Fi Channels: Use a Wi-Fi analyzer app to find a less crowded channel for your 2.4GHz and 5GHz bands. Summary Table: Device Specifications Specification Interface 1 SC/APC GPON, 4 GE, 1 POTS, 1 USB, Wi-Fi Wi-Fi Standard 802.11ac (Wi-Fi 5) Frequency Dual Band 2.4GHz & 5GHz MIMO 2x2 @ 2.4GHz & 2x2 @ 5GHz Max Speed Up to 1200 Mbps (Combined)

Step 1: Identify Your Exact Hardware Version

Flip your ZXHN F670L upside down. Look for a sticker with:

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