Now onwards whenever nexus 5x is rebooted there might be a warning about an unlocked bootloader. Use volume keys for scrolling and power button for confirming. This will ask for confirmation in the Nexus 5x's screen(2nd pic below). Type the command "fastboot oem unlock" and hit enter. Take a backup if necessary(1st pic below). Caution: This step will erase all user data from the device.If you see any error in this step or the previous one, make sure all the instructions in Prerequisites section is done properly. This will display the serial number of Nexus 5x. Type the following command "fastboot devices" without quotes.Type the following command "adb version" without quotes and it should be displaying the version of ADB (Android Debug Bridge). Open command prompt/terminal in the folder where the platform tools were previously extracted.(To do this, open the folder, hold shift + right click, select open command prompt/terminal here).Power off your Nexus 5x and once it is off, turn it back on by pressing 'P ower button + Volume down'.If these is no developer options in the settings menu, tap the " Build number" repeatedly until it says ' developer mode enabled'. Go to settings > Developer Options and spot ' enable USB Debugging' and ' Enable OEM Unlock' options and enable them.To unlock the Bootloader of Nexus 5x, follow the below instructions. Each of these links to the main discussion thread on our discussion forum.This is the first step. The announcements are also posted from the Twitter account, on the official subreddit, and in the official GrapheneOS chat rooms including the dedicated #releases: room for release announcements. The main place to discuss the releases are the threads posted on our our discussion forum with the Announcements tag. A release announcement indicates that the source code tags are available and that the official builds will soon be pushed out via the Alpha channel. Releases are announced on this page and included in an atom feed usable from any standard feed reader app. In general, it's not possible to downgrade unless a downgrade update package is generated, so use the Stable channel if you cannot tolerate dealing with temporary issues while a new release for the Beta channel is being created. In some cases, problems are caught during Beta channel testing and a new release is made via the Beta channel to replace the aborted one. Finally, the release is then pushed out via the Stable channel after being tested by some users using the Beta channel. The release is then pushed out via the Beta channel shortly afterwards. Releases are tested by the developers and are then pushed out via the Alpha channel. Verified boot and the hardware-backed keystore also act as a final layer of protection. ![]() The internal payload for update_engine is also signed, providing another layer of signature verification and downgrade protection. Downgrade attacks are also prevented, and downgrades cannot be done unless a special downgrade update package has been signed with the release key. The update packages have an internal signature verified by the update client (or recovery when sideloading). Update packages are not for performing the initial installation and you should ignore incorrect guides trying to use them to install the OS. Those aren't currently linked below but may be in the future once they're being used more consistently. The over-the-air updates use delta update packages when available. A full update package can upgrade from any past version to the new version. GrapheneOS uses automatic over-the-air updates, but full update packages are listed below for uncommon use cases like never connecting the device to the internet. The factory images are used for the initial installation and can be verified with signify. These releases are available as both tags in the source code repositories and official builds.
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