: To communicate with a device's cellular modem configuration, technicians must boot the phone into Diagnostic Mode (DIAG Port) . This usually requires specialized USB debugging commands ( adb shell setprop sys.usb.config diag,adb ) or specific hardware test points on the motherboard known as EDL (Emergency Download) points.

Check the dropdown menu. If the Qualcomm HS-USB Diagnostics 9091 (or similar) port is visible, click Connect or Refresh . Step 3: Back Up Existing Data Navigate to the backup section within the tool.

Check if the device is actually in Diag Mode; a standard MTP or Charging connection will not work.

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: To communicate with a device's cellular modem configuration, technicians must boot the phone into Diagnostic Mode (DIAG Port) . This usually requires specialized USB debugging commands ( adb shell setprop sys.usb.config diag,adb ) or specific hardware test points on the motherboard known as EDL (Emergency Download) points.

Check the dropdown menu. If the Qualcomm HS-USB Diagnostics 9091 (or similar) port is visible, click Connect or Refresh . Step 3: Back Up Existing Data Navigate to the backup section within the tool. : To communicate with a device's cellular modem

Check if the device is actually in Diag Mode; a standard MTP or Charging connection will not work. : To communicate with a device's cellular modem