Rebuilder Tool | Qualcomm Imei

You may legally repair your device if:

Writing a different IMEI (even a valid unused one) to bypass a carrier blacklist is a federal crime in many jurisdictions. qualcomm imei rebuilder tool

import struct
def luhn_checksum(imei: str) -> int:
    """Calculate Luhn checksum for a 14‑digit base IMEI."""
    total = 0
    for i, digit in enumerate(reversed(imei)):
        n = int(digit)
        if i % 2 == 0:  # even position from the right (0‑based)
            n *= 2
            if n > 9:
                n -= 9
        total += n
    return (10 - (total % 10)) % 10
def build_imei_block(imei1: str, imei2: str = "") -> bytes:
    """Create the 16‑byte NV block for single‑SIM or dual‑SIM devices."""
    imei1_full = imei1 + str(luhn_checksum(imei1))
    block = imei1_full.encode('ascii')
    if imei2:
        imei2_full = imei2 + str(luhn_checksum(imei2))
        block += imei2_full.encode('ascii')
    # Pad to 16 bytes
    return block.ljust(16, b'\xFF')

The snippet demonstrates the checksum calculation and how to pack the IMEI(s) into the NV block that the rebuilder would write. You may legally repair your device if:

Many "missing IMEI" cases are actually incorrect modem firmware. Use Odin for Samsung or MiFlash for Xiaomi to flash the full stock firmware, including the persist and modemst partitions. Writing a different IMEI (even a valid unused