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How to Fix "Custom Binary Blocked by FRP Lock" on Samsung Devices

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How to Fix "Custom Binary Blocked by FRP Lock" on Samsung Devices 

custom binary blocked by FRP lock Fix Problem Samsung


If you're encountering the "Custom Binary Blocked by FRP Lock" error on your Samsung device, don’t worry! This issue can be resolved by flashing the stock firmware using Odin. Follow this step-by-step guide to fix the problem and get your device back to normal.

Important Notes Before You Begin

  1. Backup Your Data First: Flashing firmware can erase all data on your device. Make sure to back up your important files, photos, and contacts before proceeding.
  2. Charge Your Device: Ensure your Samsung device has at least 60% battery to avoid interruptions during the process.
  3. Use a Reliable PC: A stable computer with a good USB connection is essential for this process.

Step-by-Step Guide to Fix Custom Binary Blocked by FRP Lock on Samsung

Step 1: Download and Install Samsung Drivers

  • Go to the official Samsung website or a trusted source to download the latest Samsung USB drivers.
  • Install the drivers on your PC to ensure proper communication between your device and computer.

Step 2: Download Odin Tool

  • Download the latest version of Odin (a flashing tool for Samsung devices) from Here.
  • Extract the Odin ZIP file to a folder on your computer.
  • Open the Odin executable file to launch the tool.
samsung odin tool

Step 3: Download the Correct Firmware for Your Samsung Model

  • Visit a reliable firmware website (such as SamMobile or SamFW  or just google it).
  • Search for and download the full firmware package specific to your Samsung model and region.
  • Extract the firmware files to a folder on your PC.

Step 4: Load Firmware Files into Odin

  1. Open Odin on your PC.
  2. Load the extracted firmware files into their respective slots:
    • BL: Bootloader file (BL_*.tar.md5)
    • AP: AP file (AP_*.tar.md5)
      • Note: Loading the AP file may take some time due to its large size.
    • CP: Modem file (CP_*.tar.md5)
    • CSC: Choose one of the following:
      • CSC_*.tar.md5: Performs a full wipe (factory reset).
      • HOME_CSC_*.tar.md5: Retains user data (no wipe).

Step 5: Enter Download Mode on Your Samsung Device

  1. Power off your Samsung device completely.
  2. Press and hold the Volume Down + Power + Home buttons simultaneously (varies by model).
  3. When prompted, press Volume Up to enter Download Mode.
download mode samsung

Step 6: Connect Your Device to the PC and Start Flashing

  1. Connect your Samsung device to the PC using a USB cable.
  2. In Odin, ensure the device is detected (a blue or yellow COM port will appear).
  3. Click the Start button in Odin to begin the flashing process.
4. Wait patiently for the process to complete. Your device will reboot automatically once done.

Congratulations!

Your Samsung device should now be free from the "Custom Binary Blocked by FRP Lock" error. If you used the CSC_*.tar.md5 file, your device will be reset to factory settings. If you used HOME_CSC_*.tar.md5, your data will remain intact.

Pro Tips for Success

  • Always use the correct firmware for your device model and region.
  • Ensure a stable USB connection throughout the process.
  • If Odin gets stuck or fails, restart the process and double-check the firmware files.

If you dont find your firmware samsung 4 files, just search in google with this sentence (samsung + your model firmware 4 files) and you will get it.