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Cake day: June 23rd, 2025

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  • People here are also missing one part of the android security model. Yes, you can overwrite the system partition arbitrarily while leaving the data partition intact with an unlocked bootloader, that’s how updates work.

    However, the moment you make any changes to that system partition it won’t match the developers signature and the apps on the system will throw an absolute fit. Look into building your own lineage ROM and flashing it over an official build, it’s an entire process that requires your data partition to be unlocked (ie. phone booted and pin entered) to keep your data, even without making changes.

    Realistically it isn’t insecure, if you set a passcode your data is encrypted and if someone mitm attacks your rom you will immediately notice stuff breaking all over the place.

    The whole bootloader locking is purely vendors trying to force you to buy new phones every few years instead of the user backporting security patches indefinitely, not any practical security for the end user.