Both of my 7000's were upgraded from 1.3 to 1.4 and finally to V1.6, without any problems. I used the disks provided by Technics USA for the V1.6 upgrade. It was a very simple task from my perspective. I believe Alec wrote a procedure for the upgrade in his KN7000 book. Technics also provided a procedure with the disks they sent to me. So I have that procedure in English somewhere around here.

BUT, knowing how much trouble some folks are having trying to do a "SD restore" of Bernie's styles from Bill's web site I would hesitate to suggest that the upgrade be tried by anyone who does not feel totally confident that they can do the job.