Hard Reset TELEFUNKEN Sierra

First method:

  1. At first hold down the Power button for a short while in order to switch off the device.Hard Reset TELEFUNKEN Sierra
  2. Next, press and hold together Volume Up and Power key for a few seconds.HardReset TELEFUNKEN Sierra
  3. Release held keys when you see the Boot Mode in front of you.Remove Screen Lock on TELEFUNKEN Sierra
  4. Afterwards scroll down to Recovery by using the Volume Up and press Volume Down button to confirm it.
  5. In order to open the Recovery Mode menu hold down the Power key for a short while.Hard Reset TELEFUNKEN Sierra
  6. While holding the Power key press the Volume Up once.HardReset TELEFUNKEN Sierra
  7. In the next step use Volume buttons to select "wipe data/factory reset" and tap the Power button to confirm.Wipe data on TELEFUNKEN Sierra
  8. Afterwards choose "yes" from the menu, and accept it with Power button.Master Reset TELEFUNKEN Sierra
  9. When a Recovery Mode appears again on the screen accept option "reboot system now" using Power rocker.Factory Reset TELEFUNKEN Sierra
  10. That's all. The hard reset operation should be completed.
See the Next method!

Hard Reset TELEFUNKEN Echo - bypass Screen Pattern by Recovery Mode

How to Hard Reset TELEFUNKEN Sierra - Erase Everything / Restore

Hard Reset TELEFUNKEN Echo - wipe device by Factory Reset

TELEFUNKEN Sierra Hard Reset / Unlock Screen / Clear eMMC

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

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