I have a Lumia 535, and I upgraded it to Windows 10 mobile.
After the upgrade, none of my previous applications was present except for People and Phone. Interesting, this behavior also applied for the Setting app: it was showing the message "You need to download this app from Store" but I was unable to download the application. Also, the phone was getting too hot.
So I decided to move back to Windows Phone 8. I tried by pressing the power and volume button and after the vibration, the volume down, power and volume up buttons to start the downgrade process.
Now I am facing serious problem. The phone is showing rolling gears and after some time, when I put the phone in charging, it restarts, but it always shows rolling gears on the display.
How can I fix this problem?