Just to append to people having problems with prior firmware;
I put in Prince of Persia and got these messages "CAN'T PLAY" + "UNKNOWNDISC". I have this problem with firmware 2.70 and just updated to 2.71 and still have the problem. I also unplugged the unit for a few minutes. I'm not going to bother doing a factory reset.
Actually, I've had a few issues with Blockbuster Online rental discs freezing on certain chapters since upgrading to 2.70. I'm leaning towards the disc or firmware as the issue for these problems.
Also, there is a crater on this particular disc. I'm not sure if this is the problem in this situation.

I put in Prince of Persia and got these messages "CAN'T PLAY" + "UNKNOWNDISC". I have this problem with firmware 2.70 and just updated to 2.71 and still have the problem. I also unplugged the unit for a few minutes. I'm not going to bother doing a factory reset.
Actually, I've had a few issues with Blockbuster Online rental discs freezing on certain chapters since upgrading to 2.70. I'm leaning towards the disc or firmware as the issue for these problems.
Also, there is a crater on this particular disc. I'm not sure if this is the problem in this situation.


















They seems to be having quite a few issues with their $1000 BD player.