Use a 16-digit code via ADB/Fastboot commands ( fastboot oem unlock ).
Before you search for ROMs, understand this: huawei y9 prime custom rom
Performance Optimization: Custom ROMs are often based on AOSP (Android Open Source Project), which is significantly lighter than Huawei’s EMUI. This results in faster app opening times and smoother animations. Use a 16-digit code via ADB/Fastboot commands (