These advanced methods are for developer research only. They're extremely dangerous and likely to permanently damage your device if executed incorrectly.
When the blue warning screen appears, press the button to enter Download Mode. Step 3: Flash the Engineering Combination Firmware Connect your phone to your PC using an original USB cable. Launch the Patched Odin executable as an Administrator.
Click the slot button in Odin and select the specific engineering combination file matching your bootloader level.
Unlocking the bootloader on a Snapdragon Samsung Galaxy S9 (G960U/U1/W) is and generally not possible through standard official methods. Samsung devices sold in North America (USA, Canada) come with permanently locked bootloaders for security and carrier reasons. Critical Limitations for Snapdragon Models unlock bootloader samsung s9 snapdragon high quality
Always read the specific XDA forum thread corresponding to your model number ( SM-G960U or SM-G965U ) before attempting any modifications.
: The security fuse (Knox 0x1) is permanently blown.
Once booted into the Combination ROM, your phone will allow deeper system access via commands. These advanced methods are for developer research only
These are generally unlockable via standard methods. SM-G960F/DS (Exynos): These are easily unlockable .
If your device gets stuck on the Samsung logo, boot into Recovery Mode (Volume Up + Bixby + Power) and select Wipe Data/Factory Reset .
Tap seven times until it says "Developer mode has been turned on". Toggle OEM Unlocking : Go to Settings > Developer Options . Find and enable OEM Unlocking and USB Debugging . Enter Device Unlock Mode : Power off the device. Step 3: Flash the Engineering Combination Firmware Connect
If your device has been updated to the latest security patches, the exploits used for unlocking are often patched, making the process impossible for newer firmware versions. Risks and Trade-offs
Unlocking the bootloader permanently trips Samsung Knox (0×1). This disables Samsung Pay, Samsung Pass, Secure Folder, and some health features forever.