| Firmware Version | Release Date (2021) | Key Improvement | |----------------|----------------------|------------------| | 11.176.01.00.18 | March 2021 | Band 20 stability fix | | 11.176.01.00.22 | June 2021 | Carrier aggregation for B3+B7 | | 11.176.01.00.30 | September 2021 | Security patch (CVE-2021-32564) | | 11.176.01.00.31 | December 2021 | Final VoIP & WebUI speed boost |
Last updated: September 2025 – information verified against reverse-engineered firmware changelogs and user reports from 2021–2025. huawei b683 firmware update 4g 2021
Published: Mid-2021 Review (Retrospective & Evergreen Guide) | Firmware Version | Release Date (2021) |