It's Friday night, so I'll make some progress. I wanted to write the latest version of the firmware, but since I'm using a new PC, the USB serial communication device driver was not installed. Since MaixBit uses CH552, I need to install the driver on my PC following the instructions on this page.

https://wiki.sipeed.com/soft/maixpy/en/get_started/install_driver/bit.html

The method for rewriting the firmware is explained on this page.

https://wiki.sipeed.com/soft/maixpy/en/get_started/upgrade_maixpy_firmware.html

Also, while it is not directly related to this project, following the tutorial will allow you to easily try face detection using yolo with edge processing.

https://github.com/knorth55/maixbit_tutorials

If you have not experienced a demonstration of Edge AI using microcontrollers before, this is a great opportunity to try it out. I highly recommend giving it a go.