Problem

Unable to install a "non-wsm" image over a "wsm" image. It either fails or the process reboots continuosly. 

Solution

Purge the existing installation completely and re-install the non-wsm image.

You cannot run an image over another existing image without purging the existing image. This also fails to remove the CDB and also fails to install the correct port numbering required for your CPU model.

Run these shell commands from your device:

• sudo service versa-flexvnf stop

• sudo dpkg --purge versa-flexvnf

• sudo rm -rf /opt/versa

• sudo rm -rf /var/versa

• sudo ./<non-wsm image> 
  Fetch this image from the box.com link as mentioned in How to Identify a "non-wsm" Image? article.