Flashing Samsung firmware does not require an account, but signed-in accounts can block setup

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Flashing a Galaxy phone with Odin or Smart Switch does not require signing in to a Samsung account, since the tools and firmware files are not tied to one. The account becomes relevant after a wipe, when Factory Reset Protection may ask for the previously signed-in Samsung or Google credentials. This poses little problem for owners who know their passwords, but can be a serious obstacle with second-hand phones still linked to a former owner's account. The article recommends checking signed-in accounts before flashing and removing them if the device is changing hands. Setup can otherwise be skipped on unlocked phones, though some carrier or enterprise devices may enforce their own requirements.

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