Huwaei mt7-l09 only rescue mode

I need you help huwaei mate 7 hang on rescue mode and show ERROR! func NO: 9 ( FUNC_BOOT_KERNEL) ERROR NO : 2 already copy dload and wont entre to update mode the only mode that entre is fasboot and the phone : locked bootloader is there any soluttion i have imei but the sn no to unlock the boot loader and thanks