Updated - Imei Proinfo

Popular flashing tools (like SP Flash Tool, Miracle Box, and CM2) released updates in Q1 2025 requiring new DA (Download Agent) files. These agents now perform a checksum validation on the Proinfo block before writing. Old versions of these tools will fail to write the IMEI and will throw a "S_CHKSUM_ERROR."

| Chipset | Path / Partition | Format | |-----------|----------------------------|------------------------| | MediaTek | /dev/nvdata / NVRAM | Binary .db + .bin | | Qualcomm | /mnt/vendor/efs / EFS | XML + .sbn | | Unisoc | /dev/block/by-name/prodnv| Raw binary blocks | imei proinfo updated

The ProInfo record itself is typically 512–2048 bytes, including a checksum (CRC‑32 or XOR). An “updated” event commits this block to flash after verification. Popular flashing tools (like SP Flash Tool, Miracle

Allows users with appropriate permissions to update or correct IMEI metadata within the ProInfo database. This ensures that device inventory, warranty status, and technical specifications remain accurate even after hardware servicing or data entry errors. An “updated” event commits this block to flash

Before diving into the update, let’s break down the components.