Originally Posted by alexsweden1989
The guy on youtube probably rooted the phone. find articles about HOW TO ROOT WILDFIRE S. He must have replaced the original rom with a custom one. I do not recommend you to do that. If you root the phone with a custom rom, you won't be able to upgrade your phone with an official upgrade.
U can always undo everything and get it back to stock for an update, but what's the point. Any update that is an increase in performance and better for the user will be updated by the devs making new builds. The custom roms and kernels bring out the best in our phones