Instructions Installing ADB and Flashmode Drivers Make sure that there is check mark beside that option. You can do this by heading to Settings > Applications > Development > USB Debugging. You can read our guides on how to backup your data locally and how to backup your data to the cloud. Back-up of your personal files and important data.Check your device model number by heading to Settings > About phone. It is not compatible with any other device or variants. This guide is intended only for the Sony Ericsson Xperia Arc with model number LT15i. For those of you who haven’t updated their Xperia Arc through OTA, you can do it manually by following our step-by-step guide below.
