So Ive recently updated my Sony Xperia ZL to KitKat and I dont like it at all. It slowed down the performance and drains my battery. My question is: Is there a way to downgrade and go bak to Jellybean without having my device Rooted? That is all, thank you so much if u can figure it out.
P.S. If i erase all data of my phone by going back to Factory Settings, will this revert bak to Jellybean?