Help Sony Xperia U ST25i Gingerbread 2.3.7 to Official ICS 4.0.4

[jenisbob]

Hello Everyone,
I am totally new to Android and now i am using Sony Xperia U ST25i Gingerbread 2.3.7 ...
My current firmware is 6.0.B.3.188
I am planning yo update to ICS 4.0.4

My Sony Xperia U ST25i is not rooted and also not unlocked bootloader


I have downloaded all flashtools and Sony Xperia U ST25i Official ICS 4.0.4 Firmware 6.1.1.B.1.10 i.e. ST25i_6..1.1.B.1.10__4.0.4__world.ftf

Now please everyone guide me that are their lags on ICS 4.0.4 after update..

1.does the phone lag much in ICS?

 

[kevlaa]

Don't do it! I have and now looking of a way to get back to gb!!!
Lags so much a constant crashes!!

 

[Davdi]

ICS on the Xperia U is very laggy, but I'm living with it until I can summon the energy to root it and go for a custom ROM.