Kodi install problems

I have been running 16.1 Jarvis and I decied to upgrade to 17.1. Install did what it does with no errors shown but when kodi is opened found that it gone back to 14.2 Helix. Have run the 17.1 install a few times with no change. Decided to try installing 16.1 to go back to as I was but still only 14.2 showing in System info.I have uninstalled Kodi via Contol Panal and tried the 16.1 exe again but all it does is install 14.2.
Can any one help with this please.