Updating firmware fails: "Cannot put the board in ESP mode."

Continuing the discussion from UNO R4 Wifi is not recognized or wrong recognized:

I had the same problem but I have a windows pc, what should i do?

Are you still having the problem? If so, please provide a detailed description so I can be sure I understand it. Make sure to include the following information:

  • What did you do?
  • What were the results you expected from doing that thing?
  • What were the results you observed that did not match your expectations?

Make sure to include the full and exact text of any error or warning message you might have encountered.