Step 1: Download the latest version:

https://www.postman.com/downloads/

Step 2: Run the Installer

Step 3: Update to the most recent version

(info) It seems that the download is not installing the latest version

Step 4: Use with or without a Postman Account

(info) Skipping is possible, but you have to find the link

For stand-alone use, choose “Skip and go to the app” at the bottom