If the update disabled it, I can tell you that it disabled my (older) HD television. I purchased a powered HDMI splitter from MonoPrice. It is part MHSP0102B, and is advertised as supporting HDCP. It is a 1 to 2 splitter, but I am using only one of the outputs. It solved my problem, so if that's your problem, this will work for you. It beats unplugging the HDMI cable from your HR21, then plugging it back in again.
It was pretty cheap, but I can't remember exactly how much.