She had previously extracted a backup QCN file from a healthy, identical POCO X3 unit she kept for parts—a crucial step. If she wrote the IMEI from that phone to this one, it would clone it, which is illegal and causes network conflicts. But the v1.2 tool had a feature she relied on: the ability to patch and repair the existing database without a full overwrite, or to reconstruct the NV items based on the phone's original hardware ID.
Before providing the technical context, it is crucial to understand what this software is, how it operates, and the significant risks involved. xiaomi imei tools v1.2
Note: For newer phones, EDL mode may be required with authorized Mi account. She had previously extracted a backup QCN file
Go to Settings > About phone > Detailed info and specs > Status . Before providing the technical context, it is crucial
Version 1.2 is a specific release that brought improvements in compatibility, especially for newer Qualcomm and MediaTek-based Xiaomi models (like Redmi Note series, Mi A-series, and Poco phones). Unlike official Xiaomi tools (Mi Flash Tool), which focus on flashing firmware, this tool targets the lower-level where IMEI data is stored.
Modifying system partitions can lead to a "bootloop." Always back up your EFS/NVRAM partitions before starting.