Spreadtrum Imei Tool V4.1 -

: In many jurisdictions, including the US, UK, and India, changing an IMEI number to anything other than its original factory-assigned value is illegal and can lead to criminal charges. This tool should only be used to restore the original manufacturer-assigned IMEI to its own hardware.

Supports writing IMEI numbers in normal mode, calibration mode, and working mode.

When you flash a stock ROM or custom firmware using tools like SP Flash Tool , the NV partition is often overwritten. If the new firmware does not contain your device's original IMEI (common with generic ROMs), the IMEI reverts to 000000000000000 or null .

: Beyond IMEIs, it can often write Wi-Fi addresses, Bluetooth addresses, and serial numbers. Spreadtrum Imei Tool V4.1

Write feature in the Spreadtrum (SPD) IMEI Tool V4.1 (and similar versions)

The remains a staple utility for technicians repairing budget-friendly Spreadtrum devices. Its simplicity and effectiveness in addressing "Null IMEI" issues make it a go-to solution for network-related issues. By following the steps outlined above, users can restore their devices to full functionality.

The V4.1 release includes several technical enhancements that optimize the repair process across legacy and modern UNISOC/SPD architectures: : In many jurisdictions, including the US, UK,

To ensure structural compatibility and seamless driver communication, your technical environment must meet the following baseline parameters: Minimum Requirement Windows 7, 8, 10, or 11 (32-bit or 64-bit) Processor Intel Pentium 4 or newer RAM 1 GB RAM minimum Drivers Latest SPD/Spreadtrum USB Diagnostic Drivers installed Connectivity Standard, reliable USB data cable Step-by-Step Instructions: How to Use Version V4.1

Ensure the phone is completely switched off before connecting. Try a different hardware boot key combination (e.g., pressing both Volume Up and Down simultaneously while plugging in the cable). 3. "IMEI Out of Range" or Invalid Checksum Cause: Typo in the 15-digit sequence.

: Beyond baseband cellular configurations, V4.1 supports restoring lost Bluetooth Addresses , Wi-Fi MAC Addresses , and the device's factory Serial Number . When you flash a stock ROM or custom

Extract the downloaded Spreadtrum IMEI Tool V4.1 ZIP archive to an easily accessible folder on your local disk (e.g., C:\SPD_Tool ). Right-click the primary executable file ( ChannelServer.exe or IMEI_Tool.exe , depending on the package structure) and select . Step 2: Configure the Interface Once the user interface loads:

If you own a smartphone equipped with a Spreadtrum (now Unisoc) chipset, you may have encountered the frustrating message “Invalid IMEI” or “IMEI Null.” These errors mean your phone cannot connect to any cellular network, turning it into little more than a Wi-Fi-only tablet. The Spreadtrum IMEI Tool V4.1 is a utility designed specifically to address this problem, allowing technicians and advanced users to repair or write IMEI numbers back onto Spreadtrum devices.

This is the most critical section of this article.

: Install necessary SPD drivers on a PC and boot the phone into or power it off before connecting. Configuration