yes it worked before i tryed a friends backup to check and it works fine i didn't get it chip it myself it was done before and im using datawrite discs they are Ritek G05. ive tryed dvd decrypter my burner is a BTC its a dual layer burner that writes -r at 4x and +r at 8x my normal reader drive is also btc reads dvds at 16x i tryed the newest version of blindwrite (v5.2.6.139)lastnight and had the same problem