Q1. Why would I downgrade from Android 11 to Android 10?

Some users experience bugs, increased battery drain, or performance issues after a major OS update. Others simply prefer the user interface of the older ColorOS 7. Downgrading allows you to return to a version of the software that you find more stable or preferable.

Q2. My Oppo A92 is completely dead (hard bricked). Can this guide help?

Yes. As long as your PC can detect the phone in EDL Mode (as "Qualcomm HS-USB QDLoader 9008"), the flash tool can rewrite the entire system from a low level and bring your phone back to life.

Q3. What's the difference between the "A" and "C" builds?

The "A" builds are based on Android 10 (ColorOS 7), while the "C" builds are based on Android 11 (ColorOS 11). If you want to return to the original Android 10 software, you must flash one of the "A" builds.

Oppo A92 CPH2059 Firmware Flash File Download [Stock Rom]

The Oppo A92 (CPH2059) is a popular mid-range smartphone from 2020, featuring a large 6.5-inch display, a capable Qualcomm Snapdragon 665 chipset, and a large 5000 mAh battery. The device launched with ColorOS 7 (Android 10) and was later updated to ColorOS 11 (Android 11). This guide provides a comprehensive collection of official full firmware packages for both Android versions. These files are the essential tool for users who need to unbrick a dead or bootlooping device, downgrade from Android 11 to 10 due to bugs or personal preference, or resolve persistent software issues like severe battery drain or system freezes.

⚠️ CRUCIAL WARNING: Unbrick Tool & Downgrade Risk
This process uses the official Realme/Oppo Flash Tool, a powerful low-level utility. It is the standard method for unbricking a Qualcomm-based Oppo/Realme phone. This will completely erase all your personal data and will re-lock the bootloader. Downgrading major OS versions always carries inherent risks. Proceed with extreme caution.

⚠️ Prerequisites: Before You Begin

Click Here for the Essential Pre-Flashing Checklist

Backup Your Data: This process will wipe all data. Back up everything if your phone is accessible.
Charge The Battery: Ensure your phone has at least a 60% charge. If the phone is bricked, charge it for an hour before starting.
Windows PC: You need a Windows PC and the original Oppo USB-A to USB-C cable.

📱 Quick Device Specifications

Device: Oppo A92
Model: CPH2059
Chipset: Qualcomm Snapdragon 665
Display: 6.5″ FHD+ IPS LCD
Operating System: ColorOS 7 (Android 10) / ColorOS 11 (Android 11)
RAM: 6GB / 8GB
Storage: 128GB
Battery: 5000 mAh

🛠 Required Tools & Downloads

File / Tool	Download Link
Realme Flash Tool & Drivers	Download Tool
Qualcomm HS-USB QDLoader Drivers	Download Drivers (Alternative)

⬇️ Oppo A92 (CPH2059) Stock ROM / Firmware

Android 11 (ColorOS 11) Firmware

Android Version	Filename	Release Date	Size	Download Link
11 (C.43)	CPH2059export_…_C.43_20230209.zip	2023-02-09	6.72 GB	Download
11 (C.41)	CPH2059export_…_C.41_20221123.zip	2022-11-23	~6.68 GB	Download
11 (C.36)	CPH2059export_…_C.36_20220309.zip	2022-03-09	~6.48 GB	Download
11 (C.29)	CPH2059export_…_C.29_20210526.zip	2021-05-26	~6.49 GB	Download
11 (C.27)	CPH2059export_…_C.27_20210413.zip	2021-04-13	~6.4 GB	Download
11 (C.22)	Oppo_A92_CPH2059_…_C.22_210218.zip	2021-02-18	~6.98 GB	Mirror 1 / Mirror 2

Android 10 (ColorOS 7) Firmware (For Downgrade)

Android Version	Filename	Release Date	Size	Download Link
10 (A.49)	CPH2059PU_…_A.49_201019.zip	2020-10-19	~8.68 GB	Download
10 (A.47)	Oppo_A92_CPH2059_…_A.47_200918.zip	2020-09-18	~8.76 GB	Download

Quick Steps to Flash Oppo A92 Firmware

Download and install the Qualcomm drivers. Download and extract the Realme Flash Tool and your chosen firmware package, which will contain an .ofp file.
Launch the Realme Flash Tool (`realme_Flash_Tool.exe`) as an administrator.
Click “Browse” and load the .ofp firmware file from its folder.
Power off your phone, then enter EDL Mode by holding both Volume Up + Volume Down buttons and connecting the phone to the PC.
Once the tool detects your device, click the “Start” button and wait for the process to finish. The phone will reboot automatically.

For a more detailed, step-by-step guide on this process, please refer to our main tutorial:
👉 Full Tutorial: How to Flash Firmware with Realme Flash Tool

❓ Frequently Asked Questions (FAQs)

Q1. Why would I downgrade from Android 11 to Android 10?: Some users experience bugs, increased battery drain, or performance issues after a major OS update. Others simply prefer the user interface of the older ColorOS 7. Downgrading allows you to return to a version of the software that you find more stable or preferable.
Q2. My Oppo A92 is completely dead (hard bricked). Can this guide help?: Yes. As long as your PC can detect the phone in EDL Mode (as “Qualcomm HS-USB QDLoader 9008”), the flash tool can rewrite the entire system from a low level and bring your phone back to life.
Q3. What’s the difference between the “A” and “C” builds?: The “A” builds are based on Android 10 (ColorOS 7), while the “C” builds are based on Android 11 (ColorOS 11). If you want to return to the original Android 10 software, you must flash one of the “A” builds.

🔧 Device Troubleshooting

The flash tool is not detecting my phone: This is a driver issue. Ensure you have correctly installed the Qualcomm HS-USB QDLoader drivers, potentially disabling “Driver Signature Enforcement” in Windows. Verify the phone is in EDL mode and connected securely.
The flash tool gives a login error or a “Sahara” error: Some versions of the flash tool require an authorized OPPO account. The linked version is a no-auth build. A “Sahara” error usually points to a bad connection; try a different USB 2.0 port and the original cable.
After flashing, the phone is stuck on the Oppo logo: The first boot after a full flash or downgrade can take a very long time (up to 20 minutes). If it’s still stuck, you may need to force the phone into recovery mode and perform a “Wipe data/factory reset”.