The package also includes the MSMDownload tool, so you don’t have to download it separately. Step 1: Download Decrypted Stock OxygenOS Firmwareīelow, you will find the links to download decrypted OxygenOS firmware for your OnePlus 6 and OnePlus 6T. Now without any further ado, let us get straight to the instructions. His contribution is the reason why this unbrick method is possible. The MSMDownload tool and required decrypted stock OxygenOS firmware for OnePlus 6 and 6T was shared by XDA Senior Member Some_Random_Username on this and this XDA thread, respectively. The tool will automatically unlock the phone’s bootloader before flashing the firmware and relock it later after the unbricking process finishes. The best part about using this tool and this method is that it also works even if your phone has a locked bootloader. So, even if your phone’s secondary bootloader (the one that is normally responsible for booting) is inaccessible, you can boot your OnePlus 6/6T into EDL mode, connect it to the PC, and use the MSMDownload tool to unbrick the phone. This special boot-mode is a feature available only for devices equipped with Qualcomm SoCs and is controlled by the primary bootloader. MSMDownload Tool basically communicates with your phone over Qualcomm’s EDL mode (Emergency Download Mode) to flash the stock OxygenOS firmware. However, the tool was leaked for every OnePlus device in the past and is now available for the OnePlus 6 and OnePlus 6T as well. It is a low-level flashing utility that is used by OnePlus (and its parent company Oppo) to carry out flashing on their devices internally. Now, if you have found yourself landed in this ordeal, you can easily unbrick your OnePlus 6/6T using the MSMDownload tool.
And if you cannot boot into Fastboot/Recovery mode either, it means that you cannot install the stock firmware using Fastboot or Recovery Mode to unbrick it easily. If your OnePlus 6/6T ticks any of the signs listed above, then it’s probably hard-bricked.
That’s because the secondary bootloader is inaccessible.