Q: IPhone won't restore

I recently downloaded the beta IOS 10 update and I don't like it. I wanted to restore my phone so I could get rid of it. I plugged my phone into the usb port on my windows laptop ans synced it to ITunes. After backing up my phone, I clicked restore and it says "There was a problem downloading the software for your iPhone. The requested source was not found." I just want to fix my phone ASAP.