If the hex-edit method fails (common on Android 10/One UI 2.5), the only high-quality, reliable unlock method is the SamFAIL Token Method (cost: ~$60-100).
How it works:
Pros: Works on Bit 4, permanent, no engineering firmware required.
Cons: Paid, requires trusting a third party with your phone's serial number.
Old Android 8.0 bootloader v1/v2 allowed a root method via modified Odin. Not possible on Android 9/10 with v3+ bootloader.
Before diving into the "how," let's look at the "why." Unlocking the bootloader on this specific device allows you to: unlock bootloader samsung s9 snapdragon high quality
| Your Model | Recommendation | |------------|----------------| | SM-G960F/DS (Exynos) | Yes – unlock and enjoy LineageOS / beyondROM | | SM-G9600 (Snapdragon) | Maybe – check OEM unlock in dev options first | | SM-G960U/U1/W (Snapdragon) | No – impossible; sell and buy Exynos version |
High quality means accepting reality. For 99% of Snapdragon S9 owners, the bootloader is permanently locked. Do not waste money on "unlock services" or risky tools.
Enable OEM unlocking
Enable USB debugging
Boot to Download Mode
Unlock bootloader
Verify via fastboot (optional)
adb reboot bootloader
fastboot oem device-info
(If fastboot commands aren’t supported on your firmware, rely on Download Mode confirmation.) If the hex-edit method fails (common on Android 10/One UI 2
Post-unlock
After reboot (which performs a factory reset):
Use Samsung’s official unlock process:
Unlocking the bootloader on your Samsung S9 can offer several benefits: Pros: Works on Bit 4, permanent, no engineering