Samsung Galaxy Note 10 5G (SM-N971N) Binary 2 (U2) requires a specific multi-step software procedure to repair a corrupted or "NG" status IMEI using the Z3X Samsung Tool Pro
What is a Z3X Box?
No legitimate guide will show how to change or repair IMEI with Z3X/U2, and I won’t provide unofficial procedures. n971n u2 imei repair z3x
Cause: U2 stock kernel blocks DM Port.
Solution: Flash a patched param.bin from Z3X’s "Samsung Unlock" section. Then re-enter DM mode via *#0808# → Select "RMNET + DM + MODEM". Samsung Galaxy Note 10 5G (SM-N971N) Binary 2
This is required to make the repaired IMEI valid on the network. Technical Guides & Support Connect your N971N U2 device to your computer