Great question — answering as the UphillTech team:
Try changing the command in step 6 of How do I get a Ralink RT3290 wireless card working? to sudo make sudo make install let us know if the error message persists and exactly what the error is. Thank you for providing the error message. It appears as if you may not be running the commands in the directory where the source code resides. Try changing to the directory where you extracted the source code and proviide us a list of the contents ls
Full answer by Elder Geek: https://askubuntu.stackexchange.com/a/460076 (CC BY-SA 3.0).
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