Click the or Enter DIAG (Old/New Mode) instruction button.
Technicians frequently encounter errors where tools hang indefinitely or display a failed connection error. Use these steps to resolve common connection issues:
: Windows 10 or 11 (64-bit) is highly recommended.
Always use a high-quality, data-capable USB cable. Avoid using external USB hubs; plug the cable directly into your computer’s motherboard ports (the rear ports on a desktop PC). 3. Charge the Device enter diag mode spd
Completely shut down the target phone. Remove and re-insert the battery if it is a removable design. Hold Boot Key: Press and hold the Volume Down key.
Power off the device, then connect it to your PC via USB. (Note: On some models, you do hold any buttons; the tool triggers the mode automatically upon connection).
Once you complete the procedures above, you must verify that Windows has properly mapped the device ports: Click the or Enter DIAG (Old/New Mode) instruction button
The process of entering Diag Mode SPD varies depending on the device model and manufacturer. Here are general steps that may work for some devices:
The keyword refers to the exact process of putting a Spreadtrum (SPD) / Unisoc chipset-powered mobile device into Diagnostic (DIAG) Mode .
: For older SPD drivers, restart Windows into "Advanced Startup Options" and choose "Disable Driver Signature Enforcement" to ensure the port registers correctly. Method 1: Hardware Boot Keys (Off State) Always use a high-quality, data-capable USB cable
Note: This method is not guaranteed to work on all devices and its effectiveness can vary.
This is a very common error. It almost always points to a driver or connection issue.