Widely considered the most stable unofficial version for the Pitch Black Recovery Project (PBRP):
Go to Settings > About Phone. Confirm your exact model matches the TWRP build.
Ensure your J2 Core has at least 60% battery life to prevent unexpected shutdowns during flashing. twrp samsung j2 core best
Release the buttons when the Samsung logo appears. The phone will now boot into the TWRP home menu. Important Next Steps: Preventing Boot Loops
Without TWRP, you are stuck with Samsung’s restrictive ecosystem. With the correct TWRP for the Samsung J2 Core, you own your phone. Widely considered the most stable unofficial version for
Official TWRP Device Configuration for Samsung J2 ... - GitHub
Press and hold the and Volume Up buttons simultaneously. Release the buttons when the Samsung logo appears
: Ensure your J2 Core has at least 60% battery life to prevent unexpected shutdowns mid-flash.
If you are looking for the best to speed up this phone
The instant the screen goes black, quickly switch to holding . Release the buttons when you see the TWRP splash screen. Crucial Post-Installation Steps
Wrong TWRP version (You likely used a Velte build on a Lte phone). Solution: Reboot to Download mode (Vol Down + Home + Power). Flash the correct j2corelte build.