A file browser will pop up; locate and select your .cert file.

Open your service software (e.g., Z3X Samsung Tool Pro or Octoplus). from the model list. Select the correct COM port assigned to your phone.

to your computer using a high-quality USB cable. Ensure the connection is stable; avoid using front PC ports if possible.

: These must be installed on your PC for the tool to recognize your phone.

Click and wait for the process to complete. The tool will typically say "Writing Certificate... OK" when finished.

Go to Settings > About Device and tap Build Number seven times to enable Developer Options. In Developer Options , turn on USB Debugging . Connect the Device Connect your

Samsung Galaxy Grand Prime (SM-G530H) Go to product viewer dialog for this item.