How to put your BLU Advance 4.0 L into Recovery Mode
1. Power on the device by pressing and holding the Power key.
2. Press both Power button and Volume Up and hold them for a few seconds.
3. Let go of held keys when the BLUE icon appears.
4. Hold down the Power button.
5. You are in the Recovery Mode now. Use Volume Down to navigate and Volume Up to select.
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