Enter Diag Mode | Spd ~upd~

How to Enter Diag Mode on Spreadtrum (SPD) Devices: A Complete Guide

While holding the button, connect the phone to your PC via USB. enter diag mode spd

Once granted root access, enter: setprop sys.usb.config diag,adb How to Enter Diag Mode on Spreadtrum (SPD)

Before attempting any of the methods below, ensure you have the following: Open a Command Prompt (CMD) and type: adb

If you have ADB enabled and the device is rooted, you can force the device into Diag Mode using the command line. Connect your phone to the PC with USB Debugging enabled. Open a Command Prompt (CMD) and type: adb shell su

Press and hold the button (on some models, it’s Volume Up, or both).

If the phone is powered on and you can access the dialer, you may be able to toggle Diag Mode via the Engineer Menu. Open the app. Try the following codes: *#*#83781#*#* *#*#9646633#*#* Navigate to the Telephony or Connectivity tab. Look for "USB Setup" or "Port Settings."