Samsung’s One UI 8 update seems to prevent users from unlocking their device’s bootloader to load custom ROMs, as spotted earlier by SammyGuru. Over the weekend, users on the XDA Developers forum noticed that Samsung appears to have disabled the option on devices in regions outside the US, where the option had already been locked for years.

Samsung is changing how it rolls out software updates for its flagship smartphones, with a new strategy that separates major One UI versions from feature-packed updates—depending on whether you use a Galaxy S or a Galaxy Z device.

Android's changed update timeline has shaken up how Samsung will release One UI updates, with major changes expected with Galaxy S series.