Error when rooting Xperia U with Flashtool

[mao70]

Please if somebody can help me how can I make my xperia U faster....it runs too slow in all its applications, even when making a call. Its latest Android version is 2.3.7; its latest build number is 6.0.B.1.564. The phone informs that it has the latest version installed.

thanks for your collaboration on this matter

[Thommo]

So have you tried rooting or not as your title suggests or is your phone simply appearing to run slow

[mao70 · Accepted solution]

The phone is completely slow. It takes long tike to lad qpplications, to write, even to
make a call it takes long time to write the number, to leave and application too

[Trubo_XL]

You can upgrade to 4.0 though...

At first, it will be rough but after applying some tweaks, your phone will be blazing fast!