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 want update it to ICS 4. Apr 11, 2014How to Install Xperia U ST25i Android 4.4.2 KitKat with CM11 Custom Firmware. Hi, I am SONY ERICSSON XPERIA PRO MK16i User. Well I am very Disappointed from Sonys decision. If they cant update 2011 models to JB, then why did they promise.... Comment installer ou rinstaller un firmware officiel sur un Xperia U Salut tous ! Je vous propose aujourd'hui un tuto qui vous permettra d'installer. Sony XPERIA U is a small but a quite powerfull device. Android 4.0.4 is officially installed, but Sony Mobile will not provide an upgrade on Jelly Bean. Jun 10, 2014Sony xperia u st25i remove gmail account and pattern lock by hard reset.. Back in 2012, Sony launched a few identical looking Xperias namely the S, P and U, the S being high-end, Xperia P being mid-end and Xperia U being the budget one. . How can you go back to official firmware on Sony Xperia U, that's because last updates Sony Xperia U make your move all bad. Dec 26, 2013Sony Xperia UST25I Firmware Pre-Requisite For Download 1. Downloader Program Flash Tools 2. Sony Xperia Mobile Phone 3. Data Cable 4. Firmware. May 22, 2013how to reset flash rom firmware xperia u 6.1.1.B.1.10 materials used: - firmware ST25i 40.4 6.1.1.B.1.10 Xperia U - data cable - flashtool Thank You for.