Unisoc IMEI Repair Tool

A (formerly Spreadtrum or SPD) is specialized software used to restore or fix the International Mobile Equipment Identity (IMEI) number on devices powered by Unisoc chipsets. This is typically necessary if a device shows an "Invalid IMEI" error after a firmware flash or system crash. Popular Tools for Unisoc Devices

• First IMEI: Enter your 15-digit IMEI for SIM slot 1.
• Second IMEI: Enter your IMEI for SIM slot 2 (if dual SIM; if single SIM, leave it or repeat the first IMEI).
• Check "Enable Both IMEI" (Critical for dual SIM phones).

• Writes dual IMEI numbers (SIM1 and SIM2).
• Repairs Bluetooth and Wi-Fi MAC addresses.
• Backs up and restores NVRAM.
• Works on Windows 7, 8, 10, and 11 (with driver updates).

The Definitive Technical Guide to Unisoc IMEI Repair Tools

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

IMEI Still "Invalid"

: You may need to flash the stock firmware (PAC file) first to repair the underlying system structure before the tool can write the IMEI.

Aftersales Tool

: Similar to CarlCare, this is a technician-focused utility designed for factory-level IMEI writing. How to Use the SPD Write IMEI Tool: A Step-by-Step Guide