I started using Python with Winpython and Spyder interface version 3.x. Now that Spyder version 4.1.3 is available, I want to update from version 3.x to version 4.x without losing my spyder configuration and existing python installation. As I was already afraid, I made a backup of C:\WinPython-64bit-3.6.3.0Qt5, and then run the following commands in winpython control panel

Download Winpython 64