minecraft xbox 360

"A media update is required to play this content." "Status code: 51-C00DF236" Anyone can help me with this? Im using the System Media Player to play a .mp4 file, i might just convert it to another format.

So I have a Minecraft on my Xbox 360. I tried to update my Minecraft's textures and when I opened my Minecraft and replaced terrain.png nothing happens. So I opened my Title update and replaced my Title update's terrain.png and launches Minecraft. When I launches my Minecraft my Title update...