Entering on devices with Spreadtrum (SPD/UNISOC) chipsets is a common procedure for repairing IMEIs, flashing firmware, or unbricking the device. The method depends on whether the phone can boot into Android or if it is stuck in a bootloop/bricked state.

This usually means the phone is not entering the correct pre-boot state.

The PC should detect the device in Diag mode temporarily or permanently for service. : Specialized hardware like the NCK Pro Box Go to product viewer dialog for this item.

Wipe PINs, patterns, and passwords without losing data on supported security patches.

Once the phone enters the Factory Test Mode screen, open the shell environment: adb shell Use code with caution.

Here is a comprehensive guide on how to enter SPD Diag Mode.

The ability to separates a frustrated user from a confident technician. Whether you are reviving a legacy Samsung plasma, debugging a factory monitor, or unbricking a custom LCD controller, diagnostic mode gives you direct access to the soul of the hardware.

Right-click the Windows Start menu and select .

: Modern Windows operating systems reject unsigned Spreadtrum USB drivers. Restart your PC in Disable Driver Signature Enforcement mode before attempting driver setup.

Diagnostic (DIAG) Mode opens a dedicated communication interface between your mobile device and a computer. This interface allows service software to read and write low-level hardware data, repair corrupted IMEI addresses, calibrate radio frequency (RF) bands, and execute advanced service configurations. What is SPD Diag Mode?

Go to and tap Build Number 7 times to reveal Developer Options. Open Developer Options and slide USB Debugging to Enabled.

Your PC cannot bridge communication with the phone's modem without correct architecture drivers. Download and install the official . Ensure that DriverSetup.exe runs successfully and that your Windows Device Manager can actively recognize COM ports. 2. Prepare a Reliable USB Connection