A technician-tested Android 11 FRP bypass method for OPPO A15 using a safe MTK SP Flash Tool workflow.
If you’re staring at a “Verify your account” screen on a second-hand OPPO A15, you’re not alone. You have a good phone that’s locked up, and the common video guides for an OPPO A15 FRP bypass—using emergency codes like *#813# or TalkBack menus have probably led you to a dead end.
This guide provides the working, PC-based solution for the OPPO A15 (Model CPH2185) running the updated Android 11 system. We will directly address the phone’s MediaTek chipset, using professional tools to bypass the patched software loopholes that make other guides fail (general PC unlock workflow: Bypass FRP with PC).
Before we start, let’s confirm why the methods you’ve tried haven’t worked. This isn’t your fault; it’s due to security updates.
Many tutorials suggest an OPPO A15 emergency code for FRP, like *#813#. These worked on older Android 10 (ColorOS 7.2) systems. However, the OPPO A15 (CPH2185) was updated to Android 11. While standard guides for FRP bypass on Android 11 might work for other brands like Samsung or Pixel, OPPO’s strict security patches have permanently closed those loopholes on this specific model.
Your phone’s MediaTek Helio P35 (MT6765) chipset and updated software are the reason those old guides no longer apply. The choice is clear: the PC-based method is the only reliable solution.
| Feature | PC-Based MTK Method (This Guide) | No-PC Methods (Outdated) |
| Success Rate (Android 11) | Very High. Directly interacts with the hardware partition, ignoring the software lock. | Extremely Low. The exploits these methods depend on have been patched by OPPO security updates. |
| Time Cost | 15-20 minutes once files are downloaded. | Hours of trying different videos and complex menu sequences that no longer exist. |
| Technical Skill | Moderate. Requires following instructions carefully and installing PC drivers. | Low to moderate. Often involves confusing and non-intuitive steps. |
| Safety Risk | Low, when following our specific instructions. The main risk is formatting the wrong partition, which we prevent. | Low risk of bricking, but a high risk of malware exposure if the method requires downloading unknown APKs. |
Difficulty: Moderate (Requires a PC and Driver Installation)
Time Required: 20–30 Minutes
Risk: Medium (Incorrectly formatting partitions can brick the device. Follow Step 4 carefully.)
💡 Not Tech Savvy? This method involves technical steps like installing unsigned drivers and modifying memory addresses. If this feels too risky, you might prefer an automated professional tool like DroidKit or iMyFone LockWiper (Android), which handles the complex driver work for you.
The biggest hurdle is finding safe files. You will need to gather the following tools on your Windows PC. We recommend searching reputable forums like XDA-Developers or GSM Hosting for these specific file versions to ensure safety.
Required Checklist:
SP Flash Tool: (Version v5.19 or newer recommended)
OPPO A15 (CPH2185) Scatter File: This text file maps the phone’s storage.
MTK Auth Bypass Tool: (e.g., MCT Bypass Tool or similar) to disable the secure boot protection.
MTK USB Drivers: (LibUSB or official OPPO drivers).
Follow these steps in order. We’ve included details that other guides miss to ensure you don’t get stuck.
First, your PC needs to be able to communicate with your phone.
How to Disable Driver Signature Enforcement:
Hold down the Shift key and click Restart from the Windows Start Menu. This will reboot your PC into the Advanced Startup Options menu. Navigate to Troubleshoot > Advanced options > Startup Settings and click Restart. After your PC reboots again, press the 7 or F7 key to select “Disable driver signature enforcement.” Your PC will now start normally, and you can install the drivers without any errors. This setting reverts after the next restart.
Modern OPPO phones have a security layer that prevents tools like SP Flash Tool from connecting. You must disable this first.
Open your MTK Auth Bypass Tool.
Completely Power Off your OPPO A15.
In the tool, click ‘Disable Auth’ (or ‘Bypass’).
Press and hold Volume Up + Volume Down simultaneously on the phone.
While holding the buttons, connect the phone to the PC via USB.
The tool should display a message like “MTK / BootROM Detected” or “Protection Disabled.”
Do not disconnect the phone. Leave it connected.
Now we tell the flash tool which partition to target.
Open SP Flash Tool (run flash_tool.exe as administrator).
Download-Agent: Select the DA_6765.bin (or MTK_AllInOne_DA.bin) file.
Scatter-loading File: Select the MT6765_Android_scatter.txt file specific to the OPPO A15.

SP Flash Tool with a green checkmark circle
⚠️ Warning: This is where you must be precise. We are going to erase only the FRP partition.
In SP Flash Tool, switch to the Format tab.
Select Manual Format Flash.
Verify Your Addresses: Open your scatter text file (MT6765_Android_scatter.txt) with Notepad. Press Ctrl+F and search for frp. Ensure the addresses match the ones below.
Copy and paste these values into SP Flash Tool:
Begin Address [HEX]: 0x10088000
Format Length [HEX]: 0x100000
Double Check: Ensure you have NOT selected “Format Whole Flash.” Only “Manual Format Flash” should be selected with the specific addresses above.
Ensure your phone is still connected (from Step 2).
Click the Start button in SP Flash Tool.
The process is extremely fast. Within seconds, you should see a Green check mark pop up.
Format OK. You can now disconnect the phone and turn it on. The Google lock is gone.
Antivirus Warning? Windows Defender often flags SP Flash Tool or Auth Bypass tools as false positives because they modify system drivers. You may need to temporarily disable Real-Time Protection or create an exception for your tool folder.
Phone Not Detected? If the Auth Bypass tool sits at “Waiting for device”:
Unplug the phone.
Hold Power + Vol Up + Vol Down for 15 seconds to force a reset.
Try a USB 2.0 port (usually black, not blue) on the back of your PC.
Re-run the driver installation.
SP Flash Tool Error (0xC00…)? This usually means the Auth Bypass (Step 2) failed or disconnected. Close SP Flash Tool, disconnect the phone, and restart the process from Step 2.
No — all no-PC methods are patched. For more background on why these methods fail, see FRP Bypass Without PC.
No. The factory reset you performed before getting stuck on the FRP screen already wiped your data. This procedure only erases the tiny hidden partition that stores the Google lock status.
The absolute safest way is to use the ‘Manual Format Flash’ option and input the exact partition addresses for the frp block from your scatter file, as shown in this guide. Never use the ‘Format whole flash’ or ‘Firmware Upgrade’ options unless you are intentionally trying to reinstall the entire operating system, as this carries a much higher risk.
This guide is written for the legal owners of a device who have forgotten their own Google account credentials or purchased a device that was not properly reset. Using these methods on a device you do not legally own may have legal consequences. We do not support the use of these tools for illicit purposes.
Getting locked out of your own device is frustrating. For the OPPO A15 (CPH2185) on updated firmware, the solution is not a secret code but a direct, technical procedure. By following this guide, you have used a safe, tested method to remove the FRP lock and get your phone working again. You didn’t have to search for questionable files or worry about bricking your device. You now have the correct technique to solve the problem and move forward.