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The J2 Core’s bootloader is not unlockable on all variants (e.g., some carrier-locked versions). If you can’t unlock the bootloader in Developer Options → OEM Unlocking, you cannot flash any custom recovery.
The phone is still in download mode. To exit, force restart it by holding .
In TWRP, tap , select the file, and swipe to confirm flash.
simultaneously and connect it to your PC via USB. When the warning screen appears, long-press to enter the bootloader unlock menu and confirm. Step 2: Flash TWRP using Odin Enter Download Mode : Power off the phone. Press and hold Volume Down + Power + Home twrp samsung j2 core
Flashing custom recovery requires unlocking your bootloader. This process completely wipes your internal storage. Back up all photos, contacts, and personal files. Prepare Your PC and Phone
Press and hold the buttons to force the phone to turn off.
You must prepare the phone's software to accept custom binaries. Go to > About Phone > Software Info . The J2 Core’s bootloader is not unlockable on
Unlocking the bootloader is a mandatory first step before installing TWRP. The process is straightforward but varies slightly depending on the device model and region. Below are the general steps:
Do you have a specific issue with TWRP on your J2 Core? Drop a comment on the XDA Developers thread for this device.
The Galaxy J2 Core was released in August 2018 and runs on the Samsung Exynos 7 Quad 7570 chipset. The "Core" models (often designated with the letters F, G, M, Y) are the focus here. The primary device code name for development is . To exit, force restart it by holding
Installing TWRP involves unlocking the bootloader, which wipes all user data (contacts, photos, apps). Charge Your Battery: Ensure your
Connect the phone to your PC using a USB cable while holding the buttons. Release the buttons when the warning screen appears.
Since the Samsung Galaxy J2 Core requires an unlocked bootloader to install a custom recovery, you must enable Developer Options and OEM Unlock:
