You must have searched everywhere except here on MobileRead!

Tiersten has links to all of the (currently available) firmware versions in this post:
https://www.mobileread.com/forums/sho...d.php?t=103725 . Just click on the 3.0.2 firmware file link appropriate to your version of the Kindle and and it will bring up the download dialogue window.
Holly
Darn it! I was too busy looking for the link and Tiersten beat me to it.