@bucknall Thanks for getting back to me. I downloaded an exe file. It installed a large number of files, but didn't provide any messaging on what I needed to do next. There wasn't an executable in what was installed apart from the python.exe. I was hoping for a batch file that wrapped up a command line, or even an exe that launched the tool. Having worked out how to launch it, I must say I am impressed with the upgrade tool. It worked very smoothly and it is better than other ESP flashers I have encountered.