Stock ROM / Firmware for OnePlus 9

The term “Stock ROM” or “Firmware” describes the version of the operating system that the device’s creator pre-installs. It is the original firmware that comes with a device and can be used to return it to its default settings.

OnePlus 9 Stock Firmware – is useful for fixing issues such as hang on Logo, FRP lock, Fastboot Mode, display Blank or white after flash, dead recovery, dead after flash etc. Stock ROMs are often specific to a particular device and are not interchangeable between different devices.

Prerequisites & Preparation

• Backup Data: Flashing will completely wipe all data on your device. Back up important files and settings before proceeding.
• Battery Level: Ensure your device has at least 50% battery to prevent shutdown during the flashing process.
• USB Driver & Tools: Install the correct USB drivers for your brand and prepare the flashing tool (Odin for Samsung, SP Flash Tool/QPST for Qualcomm/MTK, etc.).

CAUTION: Flashing official firmware carries a risk of bricking your device. Proceed with caution and at your own risk. addROM is not responsible for any damage caused to your device.

Download Stock ROM & Firmware

Global / General

EDL/9008 Packages

Additional Files & Tools

• OnePlus9Oxygen_22.O.11_OTA_0110_all_2107082125_downgrade_059624cc7298428b.zip
• OnePlus9Oxygen_22.I.05_OTA_0050_all_2103242253_downgrade_for_ColorOS_cb409e1f8a70489e.zip
• 58_sign_LE2110_11_C_OTA_1660_all_4f44d4_10011000.zip
• 57_sign_LE2110_11_C_OTA_1660_all_4f44d4_10010111.zip
• LE2110_11_A_fullota_10010111.zip
• LE2110_11_A_fullota_10010111.zip
• MSM2001_11.0_target_0031_2021031900231654_10010111_fulldowngrade.zip
• https://github.com/ssut/payload-dumper-go
• QLMFlasherTRIALV1.7.rar
• OneDrive
• https://github.com/libxzr/FastbootEnhance

How to Flash Firmware / Stock ROM

To flash the stock firmware on your Oneplus device using Online Service Tool (OST LA), follow these steps:

1. Download and install the Nokia USB Drivers on your computer.
2. Download and install the Online Service Tool (OST LA) (preferably the patched version).
3. Extract the downloaded stock ROM firmware (usually in .nb0 or .mlf format).
4. Launch OnlineUpdateTool.exe from the installation directory (typically C:\Program Files (x86)\OST LA).
5. Power off your device completely. Hold the Volume Down button and connect the device to the computer via USB cable to enter Download Mode (Fastboot Mode).
6. In OST LA, click the browse button (…) and select the extracted firmware file (.nb0 or .mlf).
7. Click the Next button.
8. Wait for the flashing process to complete. The device will automatically reboot once finished.