If your device's keypad stops working after flashing, you flashed a generic firmware with wrong key matrix. Solution:
Wipes the device and installs the new OS version. Recommended for boot loops. flash tool v5.1420.0 mtk keypad
Developers need to test keypad drivers without flashing entire ROM. Using Flash Tool v5.1420.0: If your device's keypad stops working after flashing,
Navigate to your extracted folder, locate , right-click it, and select Run as administrator . Step 2: Load the Download Agent flash tool v5.1420.0 mtk keypad
Hold the correct boot key down firmly while inserting the cable, or check Device Manager for yellow warning icons. Essential Safety Precautions