Thanks for your reply. I’m having trouble locating the files by Alf you mention using the search engine in this forum. I have searched around including the Gitorious site without any joy. I did manage to download two benF DSO firmware files v3.64 as a zip. Unzipped them and tried loading them into my sd card. They look OK there but produce no joy in the 'scope. I guess they are not the right hex files.
If you could point me a bit more it would be great.