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this post was submitted on 15 Jul 2026
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DeGoogle Yourself
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Thank you. You have convinced me to try to lock my bootloader.
Hey, I'm glad you found the information helpful.
If you decide to use your own avb custom keys (meaning that you are the only person who can install cfw - this means that google, graphene, etc would fail to install as they aren't signed with your keys).
You can then use tools like Custota to allow you to have/distribute your OTA (over-the-air) cfw updates.
Why would you want to do this?
Well, for sometime I was running a rooted version of graphene w/ magisk (as I wanted "real" offline backups). This means that I needed to "sign" each release and the official graphene updates. The process was a bit tedious, but well documented.
The upshot of custota being installed on my device, was that I got a notification when I had a new self-signed update available... and the release/install process was entirely under my control. ...and if something borked, I could "rollback" to the previous version (tbh, nothing did bork, so I didn't actually need to try this).