In Sri Lanka (primary market for Dialog B310s-925), unlocking a router for personal use to switch carriers is not illegal under the Telecommunications Regulatory Commission (TRCSL) rules – provided you own the device outright.
However, flashing firmware obtained via reverse engineering violates Huawei’s software license agreement. If you are on a Dialog contract where the router is subsidized, you are legally required to keep the lock. Only unlock outright purchased devices. dialog huawei b310s-925 unlock firmware download
There are two primary methods. Method A (Downgrade + Unlock) is safer for beginners. Method B (Direct Patched Firmware) is faster but riskier. In Sri Lanka (primary market for Dialog B310s-925),
If flashing firmware is too risky, consider these alternatives: There are two primary methods