trouble with installing

spring-onion

First of all, make sure Brave isn't installed as a snap/flatpak package. These packaging formats won't work. Brave shields should be disabled too. The fastboot screen is the place to be throughout the process. To fix this:

Dani98 Error: Failed to execute 'open' on 'USBDevice': Access denied.

Open a terminal, enter
sudo apt install android-sdk-platform-tools-common
Nothing else is needed on this front, you shouldn't come across it again.

Dani98

spring-onion First of all, make sure Brave isn't installed as a snap/flatpak package.

That means following this instructions?
https://brave.com/linux/

Dani98

Now I have also tried a USB-C to USB-A Cable,
Nothing changed...
If I turn on the Data Transfer on the phone, I can access the Phones storage, therefore I guess that the cabels are ok.

spring-onion

That should do yes. You should also factory reset your phone again, I know you've done that already, but I mean for the purpose of having a clean state to work with. I'm not sure if all these settings you've changed could interfer, so it's best to start from scratch.

spring-onion

The stock cable is sufficient so try another port too, and remember if you have another Android phone accessible to you that's fairly up to date, you can install from that as well.

Dani98

WOW

that was working!

a little

Flashing factory images
The initial install will be performed by flashing the factory images. This will replace the existing OS installation and wipe all the existing data.

Flash release
Wait for the flashing process to complete. It will automatically handle flashing the firmware, rebooting into the bootloader interface, flashing the core OS, rebooting into the userspace fastboot mode, flashing the rest of the OS and finally rebooting back into the bootloader interface. Avoid interacting with the device until the flashing script is finished and the device is back at the bootloader interface. Then, proceed to locking the bootloader before using the device as locking wipes the data again.

Restarting device...

The device was restarting once and now the resstarting bar is loaded completely but the device does not restart

Dani98

https://ibb.co/cXk3zJM

Dani98

nothing happened therefore i pressed start on the phone
after that it made a reboot and said the phone is corupted
now it displays the google logo and nothing is happening again
:-(

now i have longe pressed the power button, so that the phone was turned of
then I turnded on again and booted into the fastboot mode again
then I restarted the procedure again and it got stuck again at the same point as before (see screenshot)

spring-onion

We're doing progress. Start over by booting back into fastboot (the bootloader interface), connect to another port, ideally one at the back of your computer (if you're on a desktop). And of course via the stock cable.

Dani98

The phone is in Fastboot Mode (red triangle and red text Fastboot Mode) then a lot of other text in white and in the lower 1/4 Device stats: unlocked (in red)

Before I have been using the USB-C to USB-A cable, now I switched to the original USB-C cable and a USB-C port of the Laptop (before it was at a USB-A port

Dani98

I did the procedure again, the phone was restarting once like it did before.
Then the bar at the brave browser was loading like before but then it did not get stuck at the end, instead it showed an error message:
Error: Failed to execute 'claimInterface' on 'USBDevice': Unable to claim interface.

i have another android phone runnig iodeOS, should I try that one?
Which browser should I use there?

spring-onion

Dani98 Error: Failed to execute 'claimInterface' on 'USBDevice': Unable to claim interface.

You likely had another installer tab open. Have just the one open and close everything else that isn't necessary.

Dani98

I have tried the webinstaller on the phone, it did not work.
After that I connected to the Notebook again and tried again.

AND IT WORKED!!!

I have changed nothing...
BUT IT WORKED, I have no clue why...

THANKS for helping me!!!

spring-onion

Very glad to hear that! Remember to finish the post installation steps too!

Dani98

Thanks for reminding me :-)
The number shown on boot is the same as on the webinstaller:
08c860350a9600692d10c8512f7b8e80707757468e8fbfeea2a870c0a83d6031
The auditor app says:
Pinned Security Level: High - StrongBox Hardware
Pinned OS: GrapheneOS (unmodifed official release)
User profile secure: yes

Since here: https://attestation.app/tutorial is no advice what to expect as answer, my guess is, that everything is fine :-)

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