Oppo A54 CPH2239 Download Not Completed Error Fix – Oppo_Custom.bin File Solution

If you're flashing Oppo A54 CPH2239 (MTK device) and getting the “Download not completed” error in SP Flash Tool or MTK Flash Tool, the issue often lies in the Oppo_Custom.bin file. This file plays a crucial role in defining Oppo’s custom partition configuration. When it's missing or mismatched, the flashing process stops midway, resulting in a failed download or an incomplete flash.

This guide from MobiFirms.com will help you fix the Oppo A54 download not completed error and successfully flash the firmware without damaging your device.

Step 1: Identify the Cause

The most common causes of this error include:

• Corrupted or mismatched Oppo_Custom.bin file.
• Wrong firmware version (region or build mismatch).
• Using outdated SP Flash Tool or wrong scatter file.
• Secure boot not bypassed on MTK devices.

Step 2: Download Correct Oppo A54 CPH2239 Firmware

Visit MobiFirms.com and search for “Oppo A54 CPH2239 Official Firmware”.
Make sure to:

• Match your device’s full build number (e.g., CPH2239_11_A.16).
• Download the firmware that includes the Oppo_Custom.bin file.
• Use only official or tested firmware to avoid soft-bricking.

💡 Pro Tip: Avoid downloading random firmware from forums or Telegram channels. Always prefer tested firmware from trusted sources like MobiFirms.

Step 3: Replace or Rebuild Oppo_Custom.bin File

If the firmware is missing the Oppo_Custom.bin file:

1. Extract another Oppo A54 (same build) firmware package.
2. Copy the Oppo_Custom.bin file from that package.
3. Replace it in your main firmware folder before flashing.
4. Load the scatter file again in SP Flash Tool and start the download.

🧠 If you still face errors, try renaming Oppo_Custom.bin to match your scatter partition name (e.g., custom.bin) and reimport it.

Step 4: Flash with SP Flash Tool (Secure Boot Support)

1. Open SP Flash Tool v5.2148 or higher.
2. Load scatter file → Select “Download Only”.
3. Connect your powered-off device while holding Volume Up + Down.
4. Wait for the green success checkmark.

If you get a secure boot error, use MTK Auth Bypass Tool (MTK META Utility) or UnlockTool before flashing.

Final Step: Verify and Boot

After successful flashing:

• Reboot your device manually.
• If it gets stuck on the logo, enter recovery mode → wipe data.
• Boot again; the issue should be resolved.

Your Oppo A54 CPH2239 should now flash successfully without the “Download not completed” error.

Conclusion & Call to Action

By using the correct Oppo_Custom.bin file and verified firmware from MobiFirms.com, you can fix the “Download not completed” issue permanently.
Download your official Oppo firmware, flash tools, and FRP/MDM fix files now from MobiFirms — your trusted Android repair hub.