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The leaked factory tool from 2021. Use with caution.
For the SC7715 IMEI Tool (often categorized under Spreadtrum or Unisoc writing tools), the most useful feature in the latest updated versions is the Write In FlashMode capability. This feature allows you to repair or restore an IMEI number by connecting the device in a powered-off state while holding a specific boot key (typically Volume Down or Volume Up), rather than needing the phone to be fully booted. Key Features of Modern SC7715 Tools
Flash Mode Support: Enables writing to the device's security partition without requiring "Diag Mode" or root access in some cases.
Multi-Address Writing: Beyond the standard IMEI 1 and IMEI 2, newer versions can write Bluetooth addresses, Wi-Fi MAC addresses, and Serial Numbers (SN) in a single pass.
Auto-Checksum Generation: The tool automatically generates the 15th digit (checksum) of the IMEI, reducing the risk of "Invalid IMEI" errors caused by manual typing mistakes.
Normal vs. Diag Mode Selection: Provides flexibility to switch between "Normal" mode (for devices already detected) and "Calibration/Diag" mode for more stubborn firmware.
Broad Chipset Compatibility: While specifically for the SC7715, updated 2021-2025 packages often include support for a wider range of Spreadtrum/Unisoc chipsets (like SC7731 or SC9832) using the same interface. Popular Tools for SC7715 Chipsets sc7715 imei tool latest version 2021 top
If you are looking for a specific software package, these are the most common platforms that support the SC7715:
Spreadtrum WriteIMEI Tool: The official lightweight utility for writing IMEI numbers via COM ports.
Infinity CM2 SPD: A professional-grade tool used by technicians for deep firmware and security repairs.
Chimera Tool: A high-end automated software that supports IMEI repair and "Patch Certificate" procedures for newer Android versions.
Note on Legality: IMEI repair is intended for restoring the original number found on the device's label or box. Changing an IMEI to a different one is illegal in many jurisdictions.
Samsung, Android 13, IMEI Repair + Patch Certificate with Chimera The leaked factory tool from 2021
The Spreadtrum WriteIMEI tool remains a standard utility for repairing invalid IMEI numbers on SC7715 chipset devices, with specialized tools like Miracle Box, TFT Tool, and Aftersales Tool offering additional support. These tools, used with SPD USB drivers, enable flashing original IMEI numbers in Meta or Diag mode to ensure network connectivity. For more details, watch a guide at
Note: I have structured this as a "top tools" comparison post. Disclaimer: IMEI changing is illegal in many jurisdictions unless you are writing the original IMEI back to a phone after it was erased due to firmware corruption. This post assumes legal repair use.
The SC7715 IMEI Tool is a specialized Windows-based software utility designed to read, write, backup, and restore IMEI (International Mobile Equipment Identity) numbers on devices using the Spreadtrum SC7715 chipset. This chipset is commonly found in budget-friendly smartphones, feature phones, and some IoT devices, particularly from brands like Symphony, Walton, Tecno, Itel, and various Chinese OEMs.
Unlike generic IMEI writers that often fail due to driver or protocol mismatches, the SC7715 tool is tailored specifically for the SC7715 modem architecture, ensuring reliable communication via the DIAG (Diagnostic) port.
While the 2021 “Top” version remains the pinnacle for this specific chipset, Unisoc has moved to SC9832, SC9863, and Tiger series. The SC7715 is being phased out. However, millions of SC7715 devices are still in active use across Africa, South Asia, and Latin America.
The tool continues to work flawlessly on Windows 11 and Linux (via Wine). No newer versions have been released as of 2025, cementing the 2021 top version as the definitive final release. For the SC7715 IMEI Tool (often categorized under
This is where the tool truly shines. The SC7715 chipset is notoriously tricky because it often requires specific baud rate adjustments.
Rating: ★★★★☆ (4.5/5)
The Verdict Upfront: For technicians specializing in entry-level Android devices, the SC7715 IMEI Tool (2021 Edition) stands out as one of the most reliable, no-frills solutions for fixing null/invalid IMEI issues on Spreadtrum (SPD) feature phones and smartphones. While it lacks the flashy interface of all-in-one boxes, its success rate on the SC7715/SC7715E chipset is unmatched for a standalone utility.
The keyword emphasizes the 2021 top version. Software versions matter immensely in the repair industry because:
Note: As of 2021, this was considered the "Top" tool—meaning the most reliable, feature-complete, and widely recommended version by GSM forum experts.
You must understand: IMEI tampering is illegal in many countries (USA, UK, India, EU) if done to conceal theft, bypass blacklists, or defraud carriers. However, legitimate use cases include:
Always ensure you have proof of purchase and legal ownership before using the SC7715 IMEI Tool. Never change an IMEI to match a stolen or lost device.