This article is human-written, based on real user experiences and official Huawei release notes up to Q2 2026.
https://update.download.hwcloud.huawei.com/TDS/data/files/p3/s15/G5766/g1699/v430128/f1/full/update.bin huawei h122373 firmware 10051h612sp1c00 universal link
A: Downgrading is blocked by Huawei’s rollback protection. You cannot go from SP2 to SP1. This firmware is for users on SP1 (base) or older (SP31, SP40). This article is human-written, based on real user