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This works for most OPPO models running ColorOS 11, 12, 13, or 14.

If the "demo" only refers to the status bar icons (like 100% battery and full Wi-Fi), it might just be the Android System Demo Mode About Phone Build Number 7 times until you see "You are now a developer." Go back to Additional Settings Developer Options System UI Demo Mode and toggle it 3. Engineering Codes

For newer ColorOS versions, retail devices require a specific unlock tool often used by store technicians.

Hold the and Volume Down buttons together, then connect the phone to the PC via USB. This boots the device into BROM or EDL mode.

Removing Demo Mode on Oppo devices generally falls into three categories: The Official Method (Retailer/Manufacturer):

If you cannot perform a hard reset, or if the demo mode returns after a reset, the phone is locked to a retail server. You will need to use a Windows PC and tool software. Using Oppo Unlock Tools (MRT/UMT)

If none of the above methods work, the demo mode is hard-coded into the firmware. You’ll need to flash a standard ROM using (for MediaTek chips) or MSM Download Tool (for Qualcomm chips).

Technicians often use specific APKs like or Oppo Demo Unlock Tool to bypass deeper retail locks.

The official flashing utility used alongside authorized service center firmware. General Flashing Procedure:

If the settings menu is restricted or password-protected by the retailer, you can use the hardware buttons to trigger a hard reset. Turn off your Oppo phone completely.

Release both buttons as soon as the appears on the screen.

Ensure all retail demonstration applications are gone.

If the screen asks for a verification code, look closely at the screen; Oppo recovery often displays a 4-digit code right above the prompt. Enter that exact code, select , and confirm. Method 3: Official Oppo Demo Reset Tools

Tap and tap Build Number 7 times until you see "You are now a developer."

EngineerMode is powerful. Be careful not to touch any calibration or sensor test options unless you know what you are doing.

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On newer ColorOS versions, Oppo locks down the recovery menu to prevent unauthorized wipes of store models. If the previous methods fail, you must use a computer and specialized flashing software to clear the demo partition. Prerequisites A Windows PC. A high-quality USB data cable. installed on the PC.