Regarding the USB pen drive installation - DO pay extra attention and double check that 41A.MEM is removed and 41B.MEM is successfully located on your C:/ drive BEFORE re-starting Audya holding down F10 & UNPLUGGED buttons.
The first time I selected the 41B.MEM file, clicked COPY and destination C:/ - I pressed EXECUTE and the paste transfer did not happen. Second time I pressed ENTER and the 41B.MEM appeared on my C:/ in the right location.
THE POINT IS THIS - had I deleted 41A.MEM and done a re-start WITHOUT realising that 41B.MEM had not copied over to C:/ there would have been no Operating Sytem onboard??? Correct me if I'm wrong but it seems to me that people have to pay SPECIAL attention here before re-starting Audya.
The last installation step is simple - just select 00KTNinstall00 and press ENTER, wait 3 1/2 hours and your done.
Dusan has probably been up all night enjoying all the new gorgeous sounds - I hope it went well Dusan. Carl