[solution] how to solve problem "ubuntu has been blocked by the current security policy "

https://repost.aws/questions/QU9PJl7BvYTE6fEvKsa-GouQ#ANJDSwe-nfT5e--OEfw6tIQw The link above is my previous question.

I finally solved this problem.

Those who experienced the same problem as me would have tried to initialize by following the link below. https://docs.aws.amazon.com/deepracer/latest/developerguide/deepracer-ubuntu-update-preparation.html

For those who have experienced similar problems, aws told me that the "shell script" file will run automatically if I run the link above. When booted into the usb iso file, the "shell script" actually worked, but it did not initialize.

• To solve this problem, only the contents of the factory reset file must be included in the Flask usb drive.

The link below contains what I explained. https://www.youtube.com/watch?v=f_GD7RcMsR0

• In aws, in order to avoid this problem, it would be better to correct that part in the link below and add related photos. https://docs.aws.amazon.com/deepracer/latest/developerguide/deepracer-ubuntu-update-preparation.html