fastboot Mode
How to enter devices into fastboot mode — steps for popular brands and models.
To enter Fastboot mode on Android, turn off the device and hold the Power + Volume Down buttons simultaneously until the fastboot menu appears. Alternatively, with USB debugging enabled, connect the phone to a computer and run the command adb reboot bootloader.
Methods to Enter Fastboot Mode:
Physical Button Combination (Most Common):
Power off your device completely.
Press and hold the Volume Down and Power buttons at the same time.
On many devices, you can release the buttons when you see the screen with fastboot text or the bootloader logo.
ADB Command (Requires PC):
Enable USB Debugging in Settings > Developer Options.
Connect the device to a computer.
Open Command Prompt/Terminal and type
adb reboot bootloader.
Specialized Key Combination: For some devices, you may need to hold Volume Up + Power and then choose fastboot from the menu.
Notes on Specific Devices:
Motorola/Pixel: Hold Volume Down + Power.
Xiaomi/Redmi: If Volume Down + Power doesn't work, try Volume Up + Power while connecting to a PC.
Exiting Fastboot Mode:
Hold the power button for 10-15 seconds to force a restart.
Use the command
fastboot rebootfrom your computer
Here some video tutorials for many models:
https://www.youtube.com/results?search_query=how+to+enter+fastboot+in+android+devices