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Click the Refresh button in the tool to scan for your connected device. Select the correct COM port identified in Device Manager. To Backup: Click Read or Backup . Choose a saving location on your PC. Wait for the process to hit 100%. Keep this file safe. To Restore / Repair:
Download the from a trusted mobile repair forum. Extract the contents using a tool like WinRAR or 7-Zip to a dedicated folder on your desktop. Step 2: Enable Diagnostic Mode (Diag Port)
Type su to grant root privileges (approve the prompt on your phone screen). Tungtata QCN Tool.zip
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Do you already have the installed on your PC?
To enable the diagnostic port required by the tool, your phone must be rooted (via Magisk) to grant shell commands permission. : Click the Refresh button in the tool
Here is the general workflow for using the Tungtata QCN Tool:
: Performs the reverse operation, allowing users to verify existing hex values by converting them back into readable IMEI strings.
Modifying IMEI numbers is illegal in many regions. Only use these tools for repairing the original IMEI of your device. Choose a saving location on your PC
| Tool Name | Purpose | Legality | | :--- | :--- | :--- | | | Official tool for reading/writing QCN via QDL mode. | Legal for dev/repair. | | Ultimate QCN Tool | User-friendly GUI for backup/restore. | Grey area (often modified). | | Octoplus Box / Octopus Box | Commercial hardware + software for professional repair. | Legal for certified techs. | | UniAndro Tool | Free alternative that supports many Qualcomm devices. | Legal. |
In many jurisdictions, altering or changing an IMEI number to a different identity is highly illegal. The Tungtata QCN Tool must only be used to restore the original IMEI belonging legally to that specific hardware asset.
If you are currently troubleshooting a network issue on a specific device, I can provide more targeted steps. To help me give you the best advice, could you tell me:
This article provides an in-depth, ethical, and practical guide to understanding what this tool claims to do, how it relates to Qualcomm chipset devices, and the legal responsibilities that come with using such utilities. Whether you are a professional technician or an advanced hobbyist, understanding the function of the QCN Tool is essential before you attempt any repair.