Have you ever flashed a custom ROM only to find your device can no longer make calls because the IMEI is "Null" or "Unknown"? This common issue on MediaTek (MTK) devices can be frustrating, but tools like the (also known as the SN Write Tool) are designed to provide a permanent fix by reflashing these critical identifiers directly into the device's NVRAM. What is the SN Writer Tool?
: Supports flashing over both MediaTek USB VCOM drivers and Meta Mode.
: The computer needs the specific MTK VCOM driver installed so Windows can communicate with the phone while it is switched off or in Meta Mode.
: Fully supports dual-SIM devices with independent IMEI configurations. imei sn writer tool 153 patched download
Uses specific MD1_DB and AP_DB files from the phone's stock ROM for precise writing.
The is a specialized Windows utility used by mobile technicians to repair, restore, and write IMEI numbers, Serial Numbers (SN), and Bluetooth/Wi-Fi MAC addresses on MediaTek (MTK) smartphones and tablets.
Unlike simple "IMEI changer" apps, this tool provides a more permanent fix that survives factory resets because it writes directly to the device's system partitions. Key Features of Version 1.5.3 (and Patched Versions) Have you ever flashed a custom ROM only
Certain newer MediaTek devices require authorized DLL files or digital signatures for IMEI writing. Patched versions claim to bypass these security measures.
If you need a of the official SN Writer Tool (typically used by authorized service centers for repair with proper credentials):
Before you begin the process, ensure you have gathered the following: : Supports flashing over both MediaTek USB VCOM
Malware scanners identified this file under multiple threat categories, including:
Features an automated execution sequence that writes variables to the chip in under five seconds once connected. Download Prerequisites and Requirements
: This is the official service software provided by MediaTek for testing and calibration. It is free, does not require a patch or a dongle, and can write IMEI data securely when paired with the proper firmware DB files.
If you are currently trying to fix a phone, tell me the you are working on, the specific error message it shows, and your computer's operating system so I can guide you through the safest repair method. Share public link
The Mobile Telephones (Re-programming) Act makes it clear that the offenses occur when a person intends to make an unauthorized change to an IMEI number or supplies equipment with knowledge that it will be used for that purpose. Unauthorized IMEI modification can violate federal and state laws related to telecommunications fraud and computer tampering.