Help in updating software

I used to use SimpleSerial V2.0 for my project and now I want to use V2.1 in my previous project. I try to copy the simpleserial files in your github but it seems like I miss some parts. I want to know how to update these files in my ChipWhisperer software.

BTW, I am using ChipWhisperer windows.
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Try running the first code block in jupyter/ChipWhisperer Updating.ipynb:

%%bash
cd ..
git pull
git checkout

If that doesn’t work, try changing it to

%%bash
cd ..
git checkout *
git pull

Alex