Repair it yourself

This tutorial works for the Sony Xperia U ST25i and it works with rooted or unrooted phones without unlocking the boot loader. Please consider that flashing a new firmware may void your warranty or damage your phone which is only your own responsibility . For the Android 4.04 Ice Cream firmware I am using the official one, it is not a custom Rom but the official one that will be available through PC-Companion (but it is not the case yet), so if you cannot wait and you would like to try, read on. Steps to install official ICS (Ice Cream Sandwich): Back up your phone memory with PC-Companion Uninstall PC-Companion (I had to do this so the tool would pick up the good drivers) Enable USB debugging on your phone. Donwload Flashtool and firmware (here is the full tutorial and download files: http://www.androidgadgematic.com/2012/10/install-android-4.0.4-ics-official-sony-u-st25i.html) Install Flashtool and uncompress the firmware files. Copy the firmware file XperiaU_ICS4.0.4_n...

I've got my new Sony Ericcson Xperia U yesterday and it is really a fantastic phone. The illumination bar on the bottom can be annoying at times, specially if you don't want to get all that attention all the time. I've tested a few applications in order to disable the bar led illumination , and here is the only one that has worked for me ( Screen Filter ): Just make sure that you uncheck "Enable soft-key bakclight" and that will disable the led  bottom bar. Nevertheles this will not desactivate all led notifications, you will still get notifications while browsing pictures or watching videos, but all the other notifications will dissapear.