this post was submitted on 24 Feb 2024
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Privacy
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I've relocked 3 different phones from Samsung, Nexus (was that the old pixel? dunno), and OnePlus ๐คทโโ๏ธ Maybe it's because they were old (<2020) ? No idea.
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Turns out it's a bit more than just relocking the bootloader.
https://grapheneos.org/faq#future-devices
Not sure what you're trying to point out. I responded to somebody saying it's not possible to relock other phones...
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https://lr.burger.rodeo/r/LineageOS/comments/n7yo7u/a_discussion_about_bootloader_lockingunlocking/gxiz8at/?context=3 Basically relocking without your own key is a bit pointless. But yes stand corrected that you can use your own key , it will just be a headache to do it. And generally about the pixel it's all about the titan chip. That makes it stand out. https://www.androidauthority.com/titan-m2-google-3261547/
Google's phones have always supported the full spec. OnePlus used to also do that, but quietly removed support for it. OnePlus 8T on Android 11 (last OxygenOS version) you could, but when they switched it to Oppo's ColorOS that got removed, that'd be 2021-2022 ish so that fits your experience.
For Samsungs, I don't know. They let you relock the bootloader with a custom ROM on it, not just after flashing back a stock image? And it does the whole verified boot dance, TPM works and everything?
The key feature here is relocking with your own keys and retain all the security features as if it was a manufacturer's build. Rollback protection and everything.
With your own key? Nope