: Download the exact Android 10 U4 firmware for your region (e.g., from SamFW ). Tools : Magisk APK . Odin Tool for PC. Samsung USB Drivers installed on PC. Phase 1: Unlock the Bootloader
: Go to Settings > About Phone > Software Information and tap Build Number 7 times. : Download the exact Android 10 U4 firmware
The phone will wipe and reboot. You must finish the initial setup and connect to Wi-Fi to ensure "OEM Unlocking" remains visible and grayed out in Developer Options. Samsung USB Drivers installed on PC
: Power off the phone. Hold Volume Up + Volume Down and connect it to your PC. On the blue warning screen, long-press Volume Up to enter the unlock menu, then press Volume Up again to confirm. You must finish the initial setup and connect
: In Settings > Developer Options , toggle OEM Unlocking and USB Debugging to ON.