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Thank you for your interest in the Intel Aero Compute Board.
After checking your print screen and the output you sent us, it seems that BIOS has been updated successfully. You are receiving the error: "Permission denied" due to the fact that, you did not add sudo at the beginning of your command.
Could you please try with sudo aero-get-version.py ?
This should show you the latest version of your system and also the successful BIOS update.
Let me know if I can assist with anything else.