When they said do a backup they don't mean the apps, they are referring to the operating system. As soon as you root you install a recovery program for your phone. There are three that I know of for the Dinc2: raid zero recovery (RZR), clockwork mod (CWM), and 4EXT recovery. They have an option to do a nandroid backup. This backup gives you a restart point in case you flash a ROM and something doesn't go right. Don't let that scare you away, it happens to everyone at some point. When that happens, you go into recovery and flash one of your backups and you are up and running within ten minutes. If you have any more questions, please let us know. Good luck!
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