MP4 that played a month ago wont play now?

[atracksler]

I have some MP4 movies that played before the last firmware update, and they wont play now, I get the error that the format is unsuported now… what gives?

[Vadir]

You may try resetting, and also rolling back to the previous firmware.

http://wdc.custhelp.com/app/answers/detail/a_id/5860/session/L3RpbWUvMTMyNzM0ODYwMy9zaWQvUklOdllUT2s%3D