Question : can I update the firmware my self ?
Yes, he can update the firmware himself by U disk. but per confirmed by manufactory software version 1.03 is the latest version
Problem : cursor jumps when I turn the dial at a special speed
If I go slower or faster it seems to work
And in general the cursor operation is not the best I have used, could be better.
Suggestion : in the FFT mode, adding a frequency and signal level indicator cursor will be very usefull
And to be able to set start/stop frequency and adjust over a wider range.
,thanks for suggestion,customer will verify it
Up Grade to improve the curser jump problem.