| Feature | 2021 Firmware (B09/B11) | 2022+ Firmware (B15+) | |---------|------------------------|------------------------| | | No | Yes (as modem relay) | | Mesh Wi-Fi (EasyMesh) | No | Yes | | IPv6 stability | Moderate | Excellent | | WebGUI theme | Classic blue | Dark mode option | | Memory usage | ~45% idle | ~60% idle (more features) | | Known bugs | Minor USB/SMB issues | Occasional Wi-Fi DFS false detection |
This article covers everything you need to know about the 2021 firmware cycle for the ZTE F671Y, including version numbers, changelogs, safety precautions, and troubleshooting. Before diving into the 2021 firmware, let’s establish the baseline.
Leave a comment below or visit the ZTE community forums – the 2021 update remains a hot topic for troubleshooting legacy CPEs. Disclaimer: Firmware updates carry inherent risk. The author assumes no liability for bricked devices. Always ensure the firmware filename matches your exact hardware revision (check sticker on the back – look for “F671Y-2.0” or “F671Y-3.0”).
If you are still running a pre-2021 build, do not delay the update. Follow the step-by-step guide above, always use official firmware, and perform a factory reset afterward. Your network stability – and security – will thank you.
