I am always on the lookout for new firmware versions for my hardware and came across A107 for the 4163B on the Polish CDRinfo site.
As I am not versed in Polish, I wondered if one of our members our there in cdfreaks-land who is could help us. The link is...
Link to fake file removed
The downloaded file is smaller than the usual size and, in true 'spot the difference' spirit, I noticed that the file icon is very slightly dimmer than the one for A106 (pedantic, moi? ).
I have scanned the file for viruses - none present you will be pleased to hear, but am loathed to try installing it until we know more.
Have fun mon braves!