This is the genuine old software but without updates. It will work on legacy devices (Huawei Y330, G630, Ascend P6, etc.). For any device released in the last 7 years, it will output "Invalid IMEI" or a code that fails.
: Advanced users can find Python-based implementations on GitHub , which can be run locally or via an online IDE. Step-by-Step: How to Use the Calculator huawei unlock code calculator v3 download updated
DirectUnlocks, UnlockBase, TheUnlockingCompany, MobileUnlocked. This is the genuine old software but without updates