Before attempting a repair, it is vital to understand why the IMEI was lost in the first place. The International Mobile Equipment Identity (IMEI) is a unique number assigned to every mobile device. It is stored in a specific partition on the phone’s internal memory, often referred to as the NVRAM or EFS partition.
; the device should appear as "SPD U2S/COM Port" when connected in boot mode. Launch WriteIMEI WriteIMEI.exe and navigate to the unisoc imei repair tool
If you own a phone older than 2022, the tools still work. For 2024/2025 models, expect to use or ResearchDownload with NV Pack , which requires factory firmware with a specific factory_nv.bin . Before attempting a repair, it is vital to
This guide covers the most effective tools and a general walkthrough for the process as of April 2026 Essential Unisoc IMEI Tools ; the device should appear as "SPD U2S/COM