Understanding IMEI Repair Tools for China Keypad Mobile Phones

5. NCK Dongle / Box (Hardware-Based)

• Flashing wrong or incompatible firmware (ROM)
• Factory reset via secret engineering codes that wipe NVRAM
• Hardware issues (eMMC corruption, damaged RF cal data)
• Using unauthorized SP Flash Tool without backup
• Malware or system crashes on MediaTek (MTK) and Spreadtrum (Unisoc) chipsets

India

In many countries, including , tampering with or changing an IMEI number is a serious criminal offence under laws like the Telecommunications Act, 2023 .