When a new firmware is released for the BananaPi it is made available on new SD card images for BananaPi OS. If you do not wish to install a new image but just update your existing SD card then you can just use the commands
Which will update your software to the latest version and upgrade you firmware to the latest stable version, which is recommended for most users.
It failed again. I copied the first line and hit enter. It asked for a user name and a password. The (.get8) is different. Is that a typo on the response?