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This is the most tested method as of 2026. 4 credits (~€16). Time: 15 minutes. How to Unlock Bootloader in HUAWEI Mate 20 Pro ...
There are various websites and independent sellers (often found on XDA Developers forums or specialized unlocking sites) who pay for access to Huawei's back-end server databases or use specialized hardware to calculate the code. How to Unlock Bootloader in HUAWEI Mate 20 Pro ...