RW DW-D56A hardware or firmware fault?

hi all,

well, I have D56A with original firmware PYS1, I upgrade it to PFS3, drive work OK for few weeks, now, without changing of anything, is situation this:

  • windows detect drive
  • I can open drive from windows via right click -> eject
  • I can’t open drive with eject button on drive
  • drive not initialize after restart (led was not blinking)
  • drive not read medium after I insert it into drive
  • when I physically move laser head to the end and I close drive and open again, head is still on same place (just drive not initialize itself)

have anyone idea if this is due firmware upgrade or is hardware fault and I should claim this drive?