Before diving into the update, let’s break down the components.
The log message “IMEI ProInfo Updated” is a low‑level system notification generated by the baseband processor or the Radio Interface Layer (RIL) within Android‑based devices (and some other embedded systems). It signals that the device’s persistent storage partition (e.g., NVRAM, EFS, or modem metadata) has successfully written a new or updated ProInfo record linked to the device’s IMEI (International Mobile Equipment Identity). This event is critical for network registration, device fingerprinting, and anti‑theft mechanisms. imei proinfo updated
| 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 | Before diving into the update, let’s break down
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. Trigger events include:
For Samsung users, the updated tool reads the Knox Warranty Bit and eFuse status. It will tell you if the device has ever rooted or flashed custom firmware—even if the seller re-locked the bootloader.
This message appears in:
Trigger events include: