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: Ensure the SPD USB Drivers are installed so your PC can recognize the device in "Diag" or "Calibration" mode.

Under the tab, check the boxes for IMEI 1 (and IMEI 2 if it's a dual-SIM device). download-writeimei-r17-0001-zip

Under the tab, select the COM port that matches your device (often appears as "SPD U2S" in Device Manager). : Ensure the SPD USB Drivers are installed

: The tool will display a green PASS message once the process is successful. Click Stop , disconnect the phone, and reboot it. disconnect the phone

Connect the phone to the PC via USB while holding the "Boot Key" (usually Volume Down or Volume Up, depending on the model).