Manual update

Hello,

I am using Types version 1.5.7 and I want to update it to 1.7. I cannot do an automatic update, so I have to do it manually through FTP. My question is should I delete the current version files before I put the new ones, or should I just put the new on top of the existing ones, thus overwriting them?

Also, should I first deactivate the plugin?

Thanks!

https://www.ads-software.com/plugins/types/