MTK NVRAM Editor Tool is a specialized utility for Windows-based PCs used to manage critical configuration data on MediaTek (MTK) chipset devices
Alternatives
for deep technical discussions on MTK NVRAM backups and common pitfalls (in Russian). Read about repairing IMEI on MediaTek devices
: One of its most common uses is restoring valid IMEI numbers when a device shows "Invalid IMEI" after a factory reset or improper flashing Backup and Restore