So, you rooted your Galaxy S3 and you want to install custom ROMs? Or maybe just want to get rid of bloatware?
Well, let me tell you that BEFORE you do any of that, you should make a backup ROM using the ClockworkMod Recovery.
Backing up a ROM backups up literally everything including the ROM, kernel, settings, and apps. The only thing that’s not backed up is the contents of your internal storage and microSD card such as personal photos and videos.
Having a backup ROM makes it easy to restore your phone when something goes wrong. And if you haven’t backed up your ROM at least once, we HIGHLY ADVISE you to do it NOW.