Blimey! I have a genuine DS1102E which looks to be running s/w 00.02.06 (is that 2.06?)
A jump to V4.something must be pretty special! Having said that, I find no fault with the instrument, at present. If it ain't borke, don't break it?
I'd be interested in finding out what the changes are, though. Can anyone who finds this info, post it here?
Ta