Unisoc Imei Repair Tool [RECOMMENDED]

For devices powered by Unisoc (formerly Spreadtrum/SPD) chipsets, an IMEI repair tool is specialized software used to restore a lost or "invalid" International Mobile Equipment Identity number. This often occurs due to software corruption, failed firmware flashes, or "null" IMEI errors. Popular Unisoc IMEI Repair Tools

Various tools exist ranging from free manufacturer-specific utilities to professional-grade multi-brand software:

Samsung, Android 13, IMEI Repair + Patch Certificate with Chimera

Understanding Unisoc IMEI Repair Tools: A Comprehensive Guide

A Unisoc IMEI repair tool is a specialized software utility used to restore or write International Mobile Equipment Identity (IMEI) numbers on devices powered by Unisoc (formerly Spreadtrum) chipsets. These tools are essential when a device's IMEI becomes "null," "invalid," or corrupted, often due to improper firmware flashing, software updates, or partition damage. Key Functions of Unisoc IMEI Tools unisoc imei repair tool

Most Unisoc repair utilities, such as the official WriteIMEI Tool, offer several core features:

Flash Single/Multiple IMEI: Allows users to write one or more IMEI numbers to a device in a single session.

Dual Connection Modes: Supports Normal Mode (device powered on) and Calibration Mode (device connected via USB without manual power-on).

Manual or Auto-Input: Users can manually type the 15-digit code or use auto-generation features for testing purposes. IMEI Calculator: Generate IMEI from Bluetooth MAC or

Extended Repair Options: Some advanced tools like ChimeraTool can also repair serial numbers, Wi-Fi addresses, and Bluetooth MAC addresses. Popular Unisoc IMEI Repair Software Unisoc Imei Repair Tool

6. Advanced / Pro Features (Optional)

  • IMEI Calculator: Generate IMEI from Bluetooth MAC or serial number for certain models.
  • Batch Processing: Write multiple devices (e.g., 50+ phones) with sequenced IMEIs from CSV file.
  • Repair Certificate: Generate new calibration certificate (SN, BT, WiFi) after IMEI repair.
  • Custom Baud Rate: Manual override for serial communication speed (for unstable connections).

The Ultimate Guide to Unisoc IMEI Repair Tool: Restoring Network Identity on Spreadtrum Chipsets

2. Unofficial / Reverse-Engineered Tools (Consumer Access)

These are the tools the public uses. They work by accessing the diagnostic ports (Diag port) of the Unisoc chipset. The most popular names include:

  • Maui Meta Tool (v9.x, v10.x)
  • SPD IMEI writer (Various modded versions)
  • Tool Hero
  • SigmaKey / Octopus Box (Hardware dongles)
  • NCK Pro Box
  • Miracle Box

Disclaimer: Using these tools to change an IMEI to a number not originally assigned to the device is illegal in most countries (e.g., US CFAA, UK Fraud Act 2006). This guide is for repairing your original IMEI (found on the box or behind the battery) back to the phone.

1. Unisoc IMEI Writer Tool (SPD IMEI Tool)

The most popular free tool developed specifically for Spreadtrum/Unisoc chips (SC7731, SC9832, SC9863, T606, T610, T616, etc.). Step 4: Write the IMEI

  • Features: Writes dual IMEI, reads NVRAM backup, resets nvitem.
  • File Format: Requires .bin or .nv files.
  • Best For: Tecno, Infinix, Itel, and generic Chinese tablets.

2. SigmaKey (Paid Hardware Dongle – For Professionals)

If you run a repair shop, SigmaKey is the gold standard. It costs ~$200 for the dongle but supports:

  • Direct IMEI repair without needing "Diag Mode" (uses Download Mode/BROM).
  • Unlocking network locks.
  • FRP bypass and firmware flashing.
  • Why pay? Free tools often corrupt the NVRAM. SigmaKey uses safe, verified algorithms.

Step 4: Write the IMEI

  1. Enter the first IMEI (15 digits) in the "IMEI 1" field.
  2. Enter the second IMEI (if dual SIM) in "IMEI 2."
  3. Click "Write IMEI."
  4. Wait for "Write Successfully" message.
  5. Click "Reset Phone" or manually reboot.

Step 2: Connect the Device

Click the "Connect Smart Phone" button in the top left corner. A dialog box will appear. Leave the default settings (USB / Auto). Click Reconnect. Crucially: Turn your phone completely off, then turn it back on. Do not unplug. The tool will detect the phone mode.

Step 1: Launch Maui Meta

Open the tool as Administrator (Right-click → Run as Administrator). You will see a splash screen with "MAUI META VER".