Hello, @blurblur
Many thanks for your patience, and hoping you are excellent.
If you are trying to re-program your board and it is not working, I would like to suggest you to do a mass erase on your part. In order to help you on how to do it, please let us know which IDE and Debugger you are using for, so we can help you more personalizedly.
If you are having some errors, please share with us the error logs, so we can see the way to help you with those.
Thanks in advance.
Sincerely,
Pablo Avalos.