I have xbox 360slim, with liteon DG-16D4S FW-9504 (its locked 0272), Dashboard 16547. I unlocked the drive with "russian style" method. Then flashed LT+ v3.0 and xbox says "play game" when inserting original disc, but actually you cant play. After flashing back the stock FW all orignal discs worked as before. Have downloaded the JF and the FW files from the links given in JF IRC chat topic. Always double-check the key. All seems to be OK but with LT+ v3.0 (0272) it just dont play discs. Can figure out why.
Log is here - http://pastebin.com/UZc62N9E
Log is here - http://pastebin.com/UZc62N9E