Spreadtrum Imei Tool V4.1 【UPDATED】

Spreadtrum IMEI Tool V4.1 (also known as the WriteIMEI Tool ) is a specialized Windows utility used to repair or write IMEI numbers on mobile devices powered by Spreadtrum (SPD) or UNISOC chipsets. Tool Overview

This tool is primarily used by technicians to restore original IMEI numbers after a firmware flash or if the device’s security partition has been corrupted. It functions by communicating with the device in "Calibration Mode," a factory test state where the bootloader accepts commands via an emulated COM port. Key Features Multi-Identifier Writing

: Supports writing IMEI, Bluetooth addresses, Wi-Fi addresses, and serial numbers. Dual-SIM Support

: Capable of writing multiple IMEI fields simultaneously for dual-SIM devices. Mode Versatility

: Offers "Normal Mode" and "Calibration Mode" for different connection requirements. Wide Compatibility

: Works with a variety of Spreadtrum-based devices from brands like Infinix, Tecno, itel, and Alcatel. General Usage Procedure Driver Installation

: Requires the installation of specific Spreadtrum USB drivers to ensure the PC recognizes the device's diagnostic port. Connection

: The device is typically connected to the PC while powered off, often using a "boot key" (like Volume Down) to trigger the correct port. Port Selection : In the tool, users must select the correct assigned to the device in Windows Device Manager. Data Entry

: Users enter the 15-digit IMEI number found on the device's original box or under the battery.

: Clicking "Write" sends the data to the device. A "PASS" message indicates a successful write. Important Considerations Legal Warning

: In many jurisdictions, changing an IMEI number to anything other than the original factory-assigned number is illegal. This tool should only be used for repair and restoration

: Improper use of IMEI tools can lead to permanent loss of network connectivity or "bricking" of the device. needed for this tool or a list of supported Spreadtrum chipsets

The Spreadtrum IMEI Tool V4.1 (also known as WriteIMEI) is a specialized Windows utility used to repair or rewrite the International Mobile Equipment Identity (IMEI) number on devices powered by Spreadtrum (SPD) or UNISOC chipsets. This tool is essential for restoring network connectivity on smartphones and tablets that have lost their IMEI due to software corruption, firmware flashing, or system crashes Key Features IMEI Repair

: Restores invalid, null, or "0000" IMEI numbers to the original factory values. Multi-Address Writing

: Beyond IMEI, it can write Bluetooth addresses, Wi-Fi MAC addresses, and Serial Numbers (SN). Dual SIM Support Spreadtrum Imei Tool V4.1

: Capable of writing two IMEI numbers simultaneously for dual-SIM devices. Mode Versatility

: Supports both "Normal Mode" and specific boot modes for different device states. How to Use Spreadtrum WriteIMEI V4.1 Before starting, ensure you have the correct SPD USB Drivers

installed on your PC so the device is recognized in the Device Manager. Launch the Tool WriteIMEI.exe as an administrator. Configure Settings Mode Select

and choose "Normal Mode" (or the mode recommended for your specific chipset). Select (SET)

to enable the fields you need to write (e.g., IMEI1, IMEI2, Bluetooth). Input IMEI : Enter the original IMEI

of the device (typically found on the sticker under the battery or on the original box) into the provided fields. Connect Device Power off your phone. ) in the tool.

Connect the phone to the PC via USB. You may need to hold a "Boot Key" (often Volume Down or Volume Up) while plugging it in. Completion : Once the progress bar reaches 100%, you should see a message. Disconnect and reboot your phone. Verification After the process, you can verify the repair by dialing

on your device's dialer to ensure the numbers match the original values. Important Legal & Safety Note:

Changing a device's IMEI to one that is not its original factory-assigned number is

in many jurisdictions and can lead to the device being blacklisted by carriers. This tool should only be used for legitimate repair purposes to restore the

IMEI. If you are unsure, it is recommended to visit a professional service center or a specific download link for this version? AI responses may include mistakes. Learn more

Spreadtrum (SPD) WriteIMEI Tool V4.1 is a utility used to repair or restore the International Mobile Equipment Identity (IMEI) on devices powered by Spreadtrum/UNISOC chipsets. It is primarily used when a device displays an "Invalid IMEI" or "No Service" error after a firmware flash or software corruption. Prerequisites SPD USB Drivers

: Must be installed so your PC recognizes the phone in "Download Mode". Original IMEI

: Locate your device's original IMEI on the box or under the battery. Spreadtrum IMEI Tool V4

: A reliable micro-USB or USB-C cable for the data connection. Step-by-Step Guide Launch the Tool WriteIMEI.exe application from the extracted V4.1 folder on your PC. Configure Settings Settings icon , ensure "IMEI1" (and "IMEI2" if dual-SIM) is checked. to apply these configurations. Input IMEI

: Enter your device’s original 15-digit IMEI into the provided input fields. Initiate Writing ) button. The tool will now wait for the device to connect. Connect the Device Power off your phone completely. Volume Down

(or sometimes Volume Up) key and connect it to the PC via USB. Device Manager

under "Ports (COM & LPT)" to ensure it appears as an "SPD" or "UNISOC" device. Completion

: The tool will automatically begin the process. Once finished, a green message will appear. Critical Warnings

: Changing an IMEI to anything other than the original factory-assigned number is in many regions and can lead to network blacklisting.

: This tool interacts with the device's NVRAM; incorrect usage can lead to permanent loss of signal or "bricking" the phone. Do you have the SPD USB drivers

installed, or would you like help finding the correct ones for your OS?

Spreadtrum IMEI Tool V4.1 (also known as the tool) is a utility used to repair or write IMEI numbers on devices powered by Spreadtrum (now Unisoc) chipsets. This is commonly used for troubleshooting "Invalid IMEI" or "No Service" issues on brands like Infinix, Tecno, Micromax, and Lava. Prerequisites SPD USB Drivers

: Ensure you have installed the correct Spreadtrum/Unisoc drivers on your PC so the device is recognized in Original IMEI : Locate your device's original IMEI, usually found on the retail box battery compartment , or by dialing if the phone still boots. Step-by-Step Guide Launch the Tool : Open the WriteIMEI.exe application from the extracted folder on your PC. Configure Settings button to configure the tool for your device. Mode Select Normal Mode (or the mode specific to your device's state), and click Port Selection

Connect your device to the PC via USB. It may need to be in "Diag Mode" to appear in the Device Manager. In the tool, select the corresponding from the port dropdown menu. Enter IMEI Data Manually enter or paste the valid 15-digit IMEI(s) into the (and IMEI 2, if applicable) fields. If you need to fix Bluetooth or Wi-Fi addresses, click and check the corresponding boxes for those addresses. Write IMEI

If the device was disconnected, connect it now (sometimes while holding a boot key or inserting the battery). Wait for the progress bar to finish; a green message indicates a successful write. : Restart your phone and dial to verify that the IMEI has been updated. Important Safety Note:

Modifying an IMEI number is illegal in many jurisdictions unless you are restoring the device's original factory-assigned IMEI for repair purposes. or a specific video tutorial for your phone model? How to use Spreadtrum WriteIMEI tool

The Spreadtrum IMEI Tool V4.1 is a specialized utility designed for devices using Spreadtrum (SPD) chipsets, such as various budget smartphones from brands like Tecno, Infinix, and Itel. It is primarily used to restore or repair IMEI numbers that have become "invalid" or "null" after a firmware flash or factory reset. Core Features and Performance Wireless communication laws (e

No Box Required: One of its strongest selling points is that it is a free software-only solution, eliminating the need for expensive hardware boxes like Miracle Box or CM2 for basic IMEI repairs.

Direct USB Repair: It allows for IMEI writing via a standard USB data cable while the device is in "Diag Mode" or "Download Mode".

Lightweight: The tool is extremely small and portable, requiring no complex installation. User Consensus and Reliability

Reviews from technical forums and repair communities generally highlight the following:

Simplicity: It is widely regarded as a "one-click" style solution for technicians, provided the correct USB drivers are installed.

Driver Sensitivity: The most common point of failure noted by users is driver compatibility. If the SPD Diag Port driver is not correctly configured, the tool will fail to "see" the device.

Niche Support: While highly effective for Spreadtrum-specific chips (like SC7731 or SC9832), it will not work for MediaTek or Qualcomm devices, which require different tools like ChimeraTool or Miracle Tool. Critical Considerations

Educational Use Only: Most guides emphasize that this tool should only be used to restore original IMEI numbers listed on the device's sticker or box.

Legal Compliance: Altering an IMEI number to a different one is illegal in many jurisdictions.

Safety: Improper use can lead to "Null IMEI" or "No Service" issues if the NVRAM data is corrupted. It is recommended to back up your current firmware before proceeding.

You can download the tool from various community repositories, including Google Drive mirrors hosted by developers.

I’m unable to provide a full article or guide for Spreadtrum IMEI Tool V4.1, as it is commonly associated with repairing or rewriting IMEI numbers on mobile devices — an action that is illegal in most jurisdictions unless performed by the device’s manufacturer or an authorized service center with proper documentation.

Altering or restoring an IMEI without legal authority can violate:

• Wireless communication laws (e.g., FCC regulations in the U.S.)
• Anti-counterfeiting and theft laws (used to bypass blacklisted devices)
• Terms of service of mobile network operators

1. Post-Flashing IMEI Corruption

After flashing a new firmware (ROM) using tools like SPD Upgrade Tool or ResearchDownload, the NVRAM (Non-Volatile Random Access Memory) section containing the IMEI is often wiped clean. The phone boots, shows "Baseband Unknown," and the IMEI field reads "Null" or "N/A."

Is Spreadtrum IMEI Tool V4.1 Legal?

This is the most critical section of this article. The legality depends entirely on your intent.

• Legal Use: Repairing a device you own where the IMEI was lost due to a software glitch or motherboard replacement (re-writing the original sticker IMEI). Authorized service centers use similar tools.
• Illegal Use: Changing the IMEI of a lost/stolen phone, evading a network blacklist, or cloning another phone’s IMEI. In most jurisdictions (USA, EU, UK, India), IMEI alteration for fraud is a serious criminal offense with heavy fines and imprisonment.

Disclaimer: The following guide is for educational purposes and legal device repair only. Always verify that the IMEI you write matches the label under the battery or the original box of the device in your possession.

Step 5: Write the New IMEI

1. In the "New IMEI 1" field, type the 15-digit IMEI.
2. For dual-SIM phones, type the second IMEI in the next field.
3. Double-check every digit. There is no undo button.
4. Click Write IMEI.
5. Wait for the log window to display: "Write IMEI Successfully" and "Checksum OK".

Key Features of V4.1

• IMEI Repair: The primary function is to write single or dual IMEI numbers to the modem NV (Non-Volatile) storage.
• Wide Chipset Support: While older tools struggled with newer chips, V4.1 supports a wide range of SPD chipsets, including the popular SC77xx and SC98xx series.
• Write/Read Capabilities: Beyond just writing, the tool allows you to back up existing NV data (if the device is still functional) to prevent future loss.
• No Box Required: This is a "Box Free" tool, making it accessible for hobbyists and repair shops that don't want to invest in expensive hardware boxes for simple tasks.

Key Features of Version 4.1

• Dual IMEI Support: Writes both IMEI 1 and IMEI 2 for dual-SIM devices.
• Backup & Restore: Saves the original modem calibration data (NV items) before overwriting.
• Baud Rate Auto-Detection: Automatically syncs with the device’s COM port speed.
• Checksum Correction: Prevents "Invalid IMEI" errors by recalculating the checksum after writing.
• Lightweight UI: No installation required; runs directly as an executable file.