Boot your P9 Lite into Fastboot Mode (Power + Volume Down).
Since you cannot get a code from Huawei, these are the primary remaining options: huawei p9 lite unlock bootloader without code extra quality
This is the most popular free method for devices with Kirin chipsets like the Boot your P9 Lite into Fastboot Mode (Power + Volume Down)
Quality of available guides/tools: 2/5
Boot your P9 Lite into Fastboot Mode (Power + Volume Down).
Since you cannot get a code from Huawei, these are the primary remaining options:
This is the most popular free method for devices with Kirin chipsets like the
Quality of available guides/tools: 2/5