Attempting to downgrade from iOS 9.3.5 to iOS 8.4.1 will not work

I attempted to follow this guide for Downgrading from iOS 9.3.5 to iOS 8.4.1.

I was able to complete every step in the list until these step(s):

I get stuck at step 20.

This is when you start the downgrade.

When the downgrade appears, I click Download and Install as usual.

But when I click it, it just stays on this screen forever:

The Download and Install button will stay grayed out and will have a spinning wheel.

I am using an iPad mini (1st gen) and am running iOS 9.3.5

For other people, the downgrade will start immediately.

Am I missing anything?

Solution 1:

I was successfully able to start the downgrade! It turns out that it.....

Drumroll, please! :)

WAS ICLOUD!

I was able to start the downgrade to 8.4.1 by signing out of iCloud, then initiating the downgrade!

I hope this helps some people