Black Screen/Booting Issue After FPOS C.073 Android 13 Update

Yeah, i am following the instructions from that page. and there it is stated, that i shall do the following:

  1. Type adb devices and press Enter :leftwards_arrow_with_hook:. You will see a pop-up on your Fairphone asking if you allow USB debugging on this computer. Tap **Allow

  2. Next, type adb reboot bootloader and press Enter :leftwards_arrow_with_hook:. The phone will now reboot into fastboot mode.**.

  3. While in fastboot mode, type fastboot flashing unlock and press Enter :leftwards_arrow_with_hook: . Follow the instructions that appear on your Fairphone’s screen. This action will wipe all the personal data on your phone.

I can enter the fastboot mode using Vol Down + Power, but i cannot use fastboot as it seems. It states:

./fastboot flashing unlock
< waiting for any device >

I will try to bring my adb key to the phone via sd card. That might help.