Hi, I'm running into an unexpected problem. I'm trying to install GrapheneOS on a Pixel 7. OEM unlock and USB debugging were successful, but when I go into fastboot, the device state line reads: "locked (unlockable)". On the web installer, when I hover over the unlock bootloader button the pointer turns into a stop sign... I've tried two computers (one on Windows, one on Linux), a bunch of different cables, and two browsers with the same results. Any idea?

    Good day! You need to switch to a chromium based browser, Firefox (based) browsers don't support web usb functionality that the installer relies on. All is good on the phone itself, though usb debugging isn't necessary.

      lemonadecheetahbeans did you enable internet? When I installed grapheme, there was a (bit different) problem with OEM unlocking. It was created out. But than I enabled wfifi for a second and then it was clickable again.
      I think my problem was different than yours based on your description.
      But if you are lucky that does the trick.

          spring-onion in the meantime I tried on Chromium! I was able to click on the unlock bootloader button and to select my Pixel 7 from the popup. It didn't go much further than that though, because I got this message: "Error: Failed to execute 'open' on 'USBDevice': Access denied." :/

            You're missing udev rules and/or might have to temporarily stop the fwupd service.

            10 days later

            Hello again! It's been a while since I first posted but I was eventually able to solve the problem and thought I'd give an update :

            I tried stopping fwupd before connecting the phone to my computer again, and it did nothing to help (I have a version newer than 1.9.10 anyway, mine is 1.9.27). Same thing with the wi-fi trick. So I went back to Windows and simply used a chromium-based browser (I'd tried with Firefox first). It worked!
            I'm glad I was able to install GrapheneOS on my friend's phone, but still don't know why it wouldn't work on Ubuntu. It was my time trying an install on Ubuntu 24.04, never had an issue with earlier LTS versions. Curious about that if anyone has an idea!

            Anyway thank you both :)

            Have you installed:

            android-sdk-platform-tools-common package.

            And Check your fwupd version with the following command:

            apt-cache policy fwupd

            If you have a fwupd version earlier than 1.9.10, you can stop fwupd with the following command:

            sudo systemctl stop fwupd.service

            It should work fine after than in Ubuntu and use Brave browser too (No Firefox)