Various community-developed utilities allow users to extract components from Huawei’s standard firmware packages and flash them manually via Fastboot command lines, provided the device's bootloader is unlocked. Prerequisites Before Flashing
The firmware version you are trying to flash may be older than the security patch level already on the device. Kirin devices have strict anti-rollback protection. Always flash firmware that is equal to or newer than the current version on the phone. hisilicon kirin 710 flash tool
Accessed by holding Volume Down while connecting the phone to a PC. It requires an unlocked bootloader for custom flashing, though factory tools can sometimes bypass this for official firmware. hisilicon kirin 710 flash tool