as I spoke in sokratis post,i had a issue with changing style to style being dangerously slow and loops going out of wack,at first I thought it was due to the extra 70mb wav loops that I added to my ketron after updating,well I was wrong,i then removed those loops and patterns and still had the same problem so then I downgraded back to 53D and everything was working without the major deley I also found strange when I was creating pattern and insert a loop in A and set the tempo to eg,120 then went to insert loop B and it was set to 56 automaticly then change that to 120 and went back to variation A and that change to tempo 56,very strange I have made many styles in the years and never experienced this,it is a definite botched update,be aware no good