: Changing, altering, or replacing a device's identifier to a different number, or masking a blacklisted/stolen device, is strictly illegal in most jurisdictions worldwide. Always flash the original numbers matching the label under your device's battery or on its retail box.
When you flash a new firmware (ROM) using SPD Upgrade Tool or ResearchDownload, the NVRAM partition is often wiped, leading to a blank IMEI.
Input the and IMEI 2 numbers in the designated fields.
: Ensure you are using the version specifically designed for your chipset generation (v4.1 is generally compatible with newer UNISOC chips). spreadtrum imei tool v41 updated
Before you attempt to use the Spreadtrum IMEI Tool v41 Updated, ensure you have:
Enables direct loading of database files ( .db or pac files) to ensure accurate parameter calibration.
In the menu, tick the boxes for IMEI 1 (and IMEI 2 if it's a dual-SIM device). Entering IMEI : : Changing, altering, or replacing a device's identifier
: Supports Calibration Mode, Normal Mode, and Flash Mode.
The v4.1 update brings stability improvements, broad driver compatibility, and enhanced security protections to ensure smooth communication between Windows computers and SPD-powered mobile hardware.
This guide covers everything you need to know about the Spreadtrum WriteIMEI tool, how to use v4.1, and its key features. What is the Spreadtrum IMEI Tool v4.1? Input the and IMEI 2 numbers in the designated fields
Check the boxes for , IMEI 2 , or alternative parameters like Wi-Fi/Bluetooth addresses if they need restoration. Click Save to lock these fields open. Phase 3: Hardware Connection and Execution Power off the target mobile device completely.
Pre-loaded with modern Unisoc config files. Permanent Fix: Writes data directly to the hardware layer. Supported Processors (Chipsets)
: Changing an IMEI number is illegal in many jurisdictions. This tool is intended for repair and restoration of original numbers only.