Can Rooting Be Done Without Unlocking Boot Loader?

[Mango]

i want to root to downgrade to Android 2.3.7 from ics (Xperia U). i'm going toroot through a sort of app from Bin4y, not using flash tool command, cause i eant to unroot later..

Plus, what will happen if i unlocked it besides the warranty because it's over..

[Mango]

Hi Guys, Recently, i Updated my Phone to 4.0.4, and the Firmware Version now is 6.1.1.B.1.54

I Found Camera Bug, It Slow, plus i have to Focus alot of times to make it Focus,and Plus, i Low Light Conditions it Makes alot and alot and alot of Noise..

i Got angry since i really love my Xperia U Camera, i've seen on Xperia Blog that .100 Firmware is Released, But PC Companion Telling me there's no Update Avaliable, i Just wanna try to update to see if it Fix the Bug, if it didn't, i'll Downgrade..

Now the Question why i can't see the Update on PC Companion, i Used VPN Service and Now i'm in U.S.

What should i do?

[Mango]

Hi Guys, PC Companion keeps telling me that i have the latest Firmware, but i have the 6.1.1.B.1.54

I want to get 6.1.1.B.1.100 To see if it fixes Bugs i saw..

i decided to Flash it Using FlashTool, But i can't find the 6.1.1.B.1.100 Firmware FTF File..

From where i can download it?

Plus, What is GENERIC or GENERIC User Firmwares?? what they mean?