you obtained an unlock code before Huawei closed the service (pre-2018). No working paid/unlock method exists today.
The . Due to Huawei’s locked bootloader policy and poor Kirin 810 Linux support, developers have abandoned the device. Unless you already have an unlocked unit with an existing backup, investing time or money into custom ROMs for this model is not recommended .
: An open-source tool that can generate unlock codes for specific Kirin-based devices. However, this often requires a "testpoint" method, which involves opening the device's back cover to short a specific point on the motherboard.
Are you aiming for , or just Google services ?