Enable (if available) and ensure the bootloader is unlocked for root permissions. Enable Diagnostic Port : Dial *#0808# on the phone's keypad. Select DM + MODEM + ADB and tap OK. Z3X Configuration : Open Z3X Samsung Tool Pro and select the SM-N971N model. Go to the Repair tab. Ensure the phone is detected in the "ADB Device" dropdown. IMEI Repair : Enter the original/new IMEI into the IMEI field. Click the Repair button.
IMEI repair on newer Samsung security levels like requires root access. n971n u2 imei repair z3x
(found on the back of the device or original box) into the IMEI slot. Enable (if available) and ensure the bootloader is
: Version 43.4 or newer (which added SM-N971N repair support). Root Access : Mandatory for the "Patch Certificate" step. Battery : At least 60% charge. USB Debugging : Enabled in Developer Options. OEM Unlocking : Bootloader must be unlocked. 🛠 Step-by-Step Procedure 1. Preparation & Rooting Z3X Configuration : Open Z3X Samsung Tool Pro