This application requires ROOT access to install ROMs (and in order to use tools) !Download ROM updates for MIUI (stable), Cyanogen (Nightly, Stable or Release Candidate) or for an alternative (other custom) ROM (manual repository).PLEASE!Note that this application is for people who know the correct procedure to install / update a ROM.For example, if you install a major update (eg Android 2.3 to 4.0), you need to WIPE / DATA and WIPE / Cache to avoid conflicts and errors. Follow the procedure and it is not the fault of System Updater if you encounter an error.Do not forget to write me a mail if you have good ideas to offer.Thank you and hope you enjoy System Updater.