Android: Easy Root Xperia Arc With A Locked Bootloader

Having a Sony Xperia phone with a locked bootloader makes flashing and rooting your phone a little more difficult and we have to find other ways to get around this. However, it is possible and this is what you want to do.   Get your Xperia Arc up to Android version 4.0.4, not 4.0.3, but 4.0.4. Important, you can do this by flashing it manually (Flashboot) or using Sony's PC Companion to update it. Now, you're going to want to flash the firmware back to 4.1.B.0.431 (Ready To Root) with the following .ftf file.  This is for the Arc LT15i, but if you look around the Internet you can find...


Android: Using Flashtool to restore stock Sony Xperia Arc/Arc S to stock firmware/kernel/etc

This guide is for the Sony Xperia Arc and the Sony Xperia Arc S. This works with both LOCKED and UNLOCKED bootloaders. However, this process is more suitable to locked bootloaders, because if you have an unlocked bootloader, you can just use Sony's Official Flash Tool Firmware 4.1.B.0.587, 4.1.B.0.431 or 4.0.2.A.0.62 Prerequisites: ADB Drivers for Xperia Arc/Arc S Flashtool 0.9.9.0 Xperia Stock Firmware either 4.1.B.0.587, 4.1.B.0.431 or 4.0.2.A.0.62 On your phone first: Enable USB Debugging Settings/Developer Options/USB Debugging Enable Unknown Sources Settings/Security/Unknown...