Enter Diag Mode Spd -

(Diagnostic Mode) on (Spreadtrum/Unisoc) devices, you typically need to use a specific hardware key combination or a software command via ADB. This mode is primarily used for repairing IMEI, flashing firmware, or performing deep system calibrations. Method 1: Hardware Key Combinations

Many modern Unisoc/SPD devices can trigger Diagnostic Mode through specific physical key combinations when connecting them to a computer. the device completely.

(1:00 - 1:20)

Learning to is a fundamental skill for anyone looking to perform advanced repairs on mobile devices. While the process can be technical and sometimes finicky, understanding the correct tools, drivers, and procedures will save you countless hours of frustration.

Monitor your Windows . Look for a newly populated port under the "Ports (COM & LPT)" section named "SPRD COM Port" , "SCI USB Serial" , or "Unisoc Diagnostics Port" . Release the keys once the port appears. enter diag mode spd

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."

The quickest method relies purely on physical buttons while the device is fully powered off. Power down the Unisoc/SPD device completely. Open on your Windows PC. the device completely

: Avoid charging-only cables; use a reliable cable connected directly to the motherboard's rear USB ports.