Downgrade to IOS 7

There is a 'signing window' that Apple allows users to install older OS's. That has closed now, so you are stuck.

http://www.macworld.com/article/2687162/how-to-downgrade.html

http://www.macworld.com/article/2688109/no-path-back-apple-stops-signing-ios-7-1 -2.html

Apple blocks you from doing that. You are stuck with iOS 8 on that device forever, sorry.

Let Apple know if you think they will listen.

http://apple.com/feedback/

Consider erasing & reinstalling if you are having issues. Backup the device first in iCloud or iTunes.

Take it to an Applestore if you think they can help, but they will probably tell you the same as above.

Apple does not - and never has - supported downgrading iOS.

It's easiest if I start with a C&P.

If it has NEVER been jailbroke, here are some standard repair procedures:

First, try a system reset. It cures many ills and it's quick, easy and harmless...

Hold down the on/off switch and the Home button simultaneously until you see the Apple logo. Ignore the "Slide to power off" text if it appears. You will not lose any apps, data, music, movies, settings, etc.

If the Reset doesn't work, try a Restore. Note that it's nowhere near as quick as a Reset. It could take well over an hour! Connect via cable to the computer that you use for sync. From iTunes, select the iPad/iPod/iPhone and then select the Summary tab. Follow the on-screen directions for Restore and be sure to say "yes" to the backup. You will be warned that all data (apps, music, movies, etc.) will be erased but, as the Restore finishes, you will be asked if you wish the contents of the backup to be copied to the iPad/iPod/iPhone. Again, say "yes."

At the end of the basic Restore, you will be asked if you wish to sync the iPad/iPod/iPhone. As before, say "yes." Note that that sync selection will disappear and the Restore will end if you do not respond within a reasonable time. If that happens, only the apps that are part of the IOS will appear on your device. Corrective action is simple - choose manual "Sync" from the bottom right of iTunes.

If you're unable to do the Restore (or it doesn't help), go into Recovery Mode per the instructions here. You WILL lose all of your data (game scores, etc,) but, for the most part, you can redownload apps and music without being charged again. Also, read this.

Perhaps if you gave us a clue what difficulties you're having we could help you.

Instead of getting angry you might try to fix it. How about some details as to your problem instead of your worthless ranting.

What have you done so far to resolve the issue?

Probably.

What have you done so far to resolve the issue?

While there may "be a way" is is NOT - as I stated - supported by Apple. Once Apple is not longer signing the certificate for a version of iOS (and at this point, 8.4.1 is the only signed version for your device), there is NO WAY to install it. You cannot downgrade iOS for that device.