Well I don't know what the occasion is, but my brand new 223F just seem to have died already.
Yesterday it was working fine, I burned a DVD, watched one and played a game using one. In the evening I tried to burn a DVD, but it failed. It seemed to be burning in ImgBurn, but nothing was written on the disk. I tried it again this morning, but with the same result. I found out that it isn't reading anything anymore either. I uninstalled the drive from Windows, reinstalled it, but no luck. I re-flashed the default SB00 firmware (which is and was on it anyway), but nothing seems to help. It's completely broken.
I just tried to burn a DVD in DiscSpeed, it seemed to burn, the graph was rather weird, but it showed a burn. Testing the Disc Quality afterwards didn't work (error: "Drive does not support function").
When testing the disk in another PC, it's still empty.