### SSH ###
    login:printeros
    password:printeros
### Flashing ###
    Linux way to upload the image to an SDcard:

    # dd if=rpi_aarch64.img of=/dev/sdX bs=512k status=progress

    (where X is your card letter)
    On other OSs you could use your preferred flashing method, but we could mention https://www.balena.io/etcher/ for Windows.
### Wifi ###
    If file named wpa_supplicant.conf exist in 100 mb fat32 partition, it be moved to /etc/wpa_supplicant/ after a boot.
    This way you can setup a wireless connection without editing a root partition(requires ability to mount an ext4).
    Here is an example of wpa_supplicant.conf:

p2p_disabled=1
ctrl_interface=/run/wpa_supplicant
ctrl_interface_group=wheel
update_config=1
network={
ssid="yourssid"
psk="yourpassword"
}

