I have a dru710a with byx3 firmware. I cannot write INFOSMART01 media. The drive dosent reconize them. Sometime the drive read this media but it isn't able to start lead-in session. When i buy the drive i had inside the firmware by01 and i was able to write this type of media, i have many INFOSMART01 writed. Is it possible? somthing is happen? are there other person that tryed this media with sony?