: It is highly recommended to use the original OnePlus Dash Type-C cable or an equivalent high-quality aftermarket cable plugged directly into a motherboard port. Avoid using external USB hubs.
Upon opening, the tool will scan your COM ports. Look at the lines listed in the tool grid; one of them should display .
Locate the file named MsmDownloadTool.exe within the extracted contents.
This is one of the most frequently encountered errors. It usually means the PC lost communication with the phone. oneplus 3t unbrick tool
However, with great tinkering power comes great responsibility. Many OnePlus 3T owners have faced the dreaded "hard brick"—a state where the phone shows . No vibration, no LED notification, no recovery mode, no fastboot. Just a dark screen and a silent protest.
Ensure the phone is completely off (hold Power for 40 seconds if unsure).
Modern versions of Microsoft Windows strictly enforce digital signatures on device drivers. Because raw Qualcomm EDL drivers are often unsigned or rely on legacy certificates, you must disable driver signature enforcement to ensure a proper installation. Open the Command Prompt as an Administrator on your PC. : It is highly recommended to use the
Do not touch the phone, bump the cable, or close any windows during this process. Interrupting a raw hardware flash can permanently brick the device's storage controller.
The OnePlus 3T Unbrick Tool is for this device. It’s not elegant, but it works flawlessly when nothing else will. Just don’t use it unless you’re truly hard-bricked — it’s a nuke, not a scalpel.
(typically ); using a version meant for the standard OnePlus 3 can lead to errors. Reliable community-hosted links are often found on the OnePlus Community Forums or XDA-Developers . The Unbricking Process Enter EDL Mode : Look at the lines listed in the tool
While holding both volume buttons, connect the USB cable to your PC.
Running the factory tool completely restores the device to its original factory state. This means your bootloader will be automatically relocked, and any custom recovery environments (like TWRP) or root frameworks (like Magisk) will be completely removed.