Unlock | Bootloader Samsung S9 Snapdragon High Quality Better

) are notoriously locked down by carriers and cannot be officially unlocked.

Samsung devices sold in the United States and Canada (Snapdragon models) typically ship with a "permanently" locked bootloader. This is largely due to carrier requirements and Samsung’s proprietary security suite, Knox. A locked bootloader ensures that only official, Samsung-signed firmware can be executed, preventing the installation of custom recoveries like TWRP or custom ROMs like LineageOS. The "Combination Firmware" Method unlock bootloader samsung s9 snapdragon high quality