HELP ! how to unlcok bootloader with device Stuck on loop

Huawei Mate 7 ( MT7-TL10)

How To Unlock Bootloader With Device Cant Boot , My phone can't boot i just have looping :eek: any help ?
i have tried to flash a rom with boot.img , recovery.img with fastboot
but my bootloader is locked so my device is not visible to it !!!!

any ideas??!1

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