Couldn't open spidev 0.0: No such file or directory

[Algocrat]

Soon after update to the firmware, I started getting this error:

[ros2_control_node-1] [ERROR] Couldn't open spidev 0.0: No such file or directory
[ros2_control_node-1] [ERROR] ioctl spi_ioc_wr_mode (1): Bad file descriptor
[ros2_control_node-1] [ERROR] ioctl spi_ioc_rd_mode (1): Bad file descriptor
[ros2_control_node-1] [ERROR] ioctl spi_ioc_wr_bits_per_word (1): Bad file descriptor
[ros2_control_node-1] [ERROR] ioctl spi_ioc_rd_bits_per_word (1): Bad file descriptor
[ros2_control_node-1] [ERROR] ioctl spi_ioc_wr_max_speed_hz (1): Bad file descriptor
[ros2_control_node-1] [ERROR] ioctl spi_ioc_rd_max_speed_hz (1): Bad file descriptor
[ros2_control_node-1] [ERROR] ioctl spi_ioc_rd_lsb_first (1): Bad file descriptor
[robot_state_publisher-2] Parsing robot urdf xml string.
[ros2_control_node-1] [INFO] [1655892091.894094917] [AmberB1Hardware]: 2.0 seconds left...
[robot_state_publisher-2] The root link base_link has an inertia specified in the URDF, but KDL does not support a root link with an inertia. As a workaround, you can add an extra dummy link to your URDF.

[AmberInside]

Please check this link below and install the origional system.
https://github.com/AmberInside/Amber_AI_ROS2/wiki/AMBER-B1-Wiki-&-How#how-to-make-a-bootable-usb-installer-on-your-own

BTW, please don't update Ubuntu system until you get a update message from AMBER.