I think the problem lays in the wiring. Although I think this wiring for uploading is correct, I am not sure which way is correct when running it with FTDI as a receptor of URAT.
martinayotte wrote:Well, the FTDI issue is a new problem that you didn't mentioned before. It doesn't help to try to narrow the issue.
Do you mean that you are using the Arduino to upload to Flash or you are using the FTDI ?
Do you have a common ground on all the setup ?