Hard Reset HTC Butterfly

First method:

  1. Switch off device by pressing Power button.HardReset HTC Butterfly
  2. Press and hold Volume Down + Power buttons. Hard Reset HTC Butterfly
  3. Release when u see three Android images.
  4. Select option "FACTORY RESET" to browse by using Volume buttons, and to choose option Power button. HardReset HTC Butterfly 
  5. After phone will automatically reboot.

Second method:

  1. Go to Settings and then to the Backup & reset options.
  2. Select Reset phone.
  3. Mark Erase all data if u want delete all media from device.
  4. Tap OK.

Hard Reset will erase all of your data
All described operations you are doing at your own risk.

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