This is a very common issue. If you see "Communications status: Failed to send Close Packet" and the process seems stuck, follow these steps:
Fixes devices stuck endlessly on the manufacturer logo screen.
If prompted for a user or license, select "Others" or follow instructions provided with your specific firmware package to import the license if required. Step 3: Put the Phone in EDL Mode Power off your device completely. Hold the buttons simultaneously. msm8x39downloadtool.exe
For some models, alternative key combinations may be required, such as:
On Windows 10 or 11, you may need to temporarily disable Driver Signature Enforcement to install the necessary older Qualcomm drivers cleanly. Required Files and Downloads This is a very common issue
. This tool is specifically for Qualcomm chipsets. If your OPPO phone has a MediaTek processor, you will need a different tool, such as SP Flash Tool . Using the wrong tool can hard-brick your device.
: Extract both the firmware package and the tool to a folder on your desktop. Step 3: Put the Phone in EDL Mode
The tool functions by leveraging – a feature embedded directly in Qualcomm Snapdragon processors that enables emergency firmware downloads through the boot ROM. When a device enters EDL mode:
Download and install the driver package on your PC. Restart your computer to finalize the driver registration. Step 2: Extract the Firmware
The msm8x39downloadtool.exe file is a proprietary internal software executable developed primarily for factory technicians and authorized repair centers. It is frequently packed inside official stock ROM firmware packages (often referred to as "Oppo Official Firmware" or "Qualcomm Fastboot/EDL ROMs").