Linuxcnc - Latest version update

I need to be pointed to any documentation that might be somewhat easy to follow in
updating my version of linuxcnc

When I modify an .nc file, when I save it, I then get asked if I want to save it.  I understand
this has been fixed with the update. 

I do not want to brick my machine.  It took me long enough to get it working perfectly. 
But I really would like to update the software if there is a smooth path to do this.

Thanks tons for any suggestions

 

Can you first tell us which version you are currently running?

2.8.2