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I want to root my Huawei y7, when I run adb reboot recovery and I go to backup, a check data, system and boot and I "Swipe to Backup" I got error: Can not create 'data/media/0/TWRP'folder (Permission denied). Failed to make backup folder. When I run adb shell, and cd data/media and ls -l I got: drwsrwsrwt 16 media_rw media_rw when I run mkdir TWRP I got error Permission denied When I run chmod 777 0, run ls -l I got drwsrwsrwt 16 media_rw media_rw but when I run mkdir TWRP I got Permission denied

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