Install wxPython on Linux Mint 20.2

To install wxPython on Linux Mint 20.2, for Python 3, enter the command in Terminal:

pip3 install -U \
    -f https://extras.wxpython.org/wxPython4/extras/linux/gtk3/ubuntu-20.04 \
    wxPython

Tested on Linux Mint 20.2 xfce, run on VirtualBox 6.1.

ref:

~ https://wxpython.org/pages/downloads/index.html

Install dfu-util on Raspberry Pi

dfu-util is a host side implementation of the DFU 1.0 and DFU 1.1 specifications of the USB forum. DFU is intended to download and upload firmware to/from devices connected over USB. It ranges from small devices like micro-controller boards to mobile phones. Using dfu-util you can download firmware to your DFU-enabled device or upload firmware from it. 

See the manual page for examples of use.

To install dfu-util on Raspberry Pi, enter the command in Terminal:

$ sudo apt install dfu-util