I just lost three hours due to a very simple problem: In the guide https://grapheneos.org/install/web#enabling-oem-unlocking it does not tell you that additionally to need to enable boot unlock. Otherwise the web installation fails. The error is in the CLI installation guide as well.

Please update the installation guides.

    Oh, I just found out that I mixed USB debugging with OEM unlocking. Was not USB debugging necessary in the past? Sorry for the confusion.

      schweizer Was not USB debugging necessary in the past?

      Never.

      Some third-party guides will tell you that you need to enable USB debugging, but it's not true. Better to follow the official guides, which are correct and up-to-date.