: Type the following command and hit Enter: adb reboot recovery . The tablet will restart directly into Recovery Mode. Navigating the Recovery Menu
: Go to Settings > About Tablet and tap Build Number 7 times. Then, in System > Developer Options , enable USB Debugging . How to Open Recovery Mode on NOKIA T21
: As soon as the device vibrates or the Nokia logo appears, release the Power button but continue holding Volume Up until you see the Android "No Command" screen. : Type the following command and hit Enter:
: To enter the actual Recovery menu from the "No Command" screen: Hold the Power button. Press the Volume Up button once, then release both. Method 2: Using ADB (Command Line) Then, in System > Developer Options , enable USB Debugging
: Press the Power button to choose the highlighted option.
: Press and hold the Volume Up and Power buttons simultaneously.
: Plug the tablet into your computer and open a Command Prompt or PowerShell window.