Samsung Galaxy J4 Bootloader Mode
How to unlock bootloader mode on your Samsung Galaxy J4 by accessing critical startup settings; follow our step-by-step guide to gain full control.
Bootloader Mode · Unlock Bootloader · ROM Installation · Custom ROM · Firmware Unlock · Device Bootloader · Boot Mode · Developer Mode
How to Start Your Samsung Galaxy J4 in Bootloader Mode
Bootloader Mode via Button Combination
The Bootloader mode allows you to execute advanced system commands, unlock the device, or install custom firmware.
Step by Step Guide
Follow this step-by-step guide to put your Samsung Galaxy J4 into Bootloader mode:
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Step 1: Turn off your device
Press and hold the Power button and select Power Off to completely turn off your device.
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Step 2: Connect your device to the computer
Use a USB cable to connect your Samsung Galaxy J4 to a computer.
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Step 3: Press Volume Down + Power Button
Press and hold the Volume Down button and the Power button at the same time until the Bootloader menu appears.
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Step 4: Bootloader Menu Appears
Once the Bootloader menu appears, release all buttons.
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Step 5: Navigate in the Bootloader Menu
Use the Volume buttons to navigate through the menu and the Power button to select an option.
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Step 6: Restart Device or Unlock Bootloader
To restart your device normally, select "Reboot system now". If you want to unlock the Bootloader, use the command
fastboot oem unlockon your PC.
