Samsung M580 Replenish hard reset
Turn off your phone. Press and hold the Volume down key + on the QWERTY keyboard press U key + press POWER together until you see Samsung logo. In Recovery menu with Vol Down select wipe data/factory reset and press ENTER key. Select Yes -- delete all user and press the Enter key. Repeat with wipe cache partition and then reboot system now.
Resetting Your M580 Device
Resetting the device restores all the factory defaults, including the ringer types and display settings. All data,
including downloaded applications are deleted.
1. Press > and tap > Privacy > Factory data reset. (You will see a disclaimer.)
2. Read the disclaimer and tap Reset phone.
3. If you are certain that you would like to restore all factory settings, tap Erase everything.
Use this method to hard reset your Samsung M580 Replenish Android phone: Enter *2767*3855#. Warning! All your data including contacts, messages etc. will be lost! Copy all your necessary data/Contacts/Messages etc. to SIM or make backup to your PC before full reset! Take out SIM card before full reset.
If your M580 Replenish frozen just take out battery and reinsert it, then, position the battery cover over the battery compartment and press down until you hear a click.