Issue changing bootanimation

Hello, so I've been trying to change my s6 bootanimation and after following each step correctly, it doesn't seem to work, I always end up with the default one. I tried using a .zip file that can be flashed through recovery, but that didn't work. I checked the permissions and even when I set them correctly it still doesn't work. I downloaded the bootanimation separately and just replaced the default in /system/media but even so it doesn't work.
Any ideas? Thanks in advance

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