Neil

I have installed the Windows version 2.17 and that has worked a treat,

Many thanks for your help.

Thanks for the info.

I have tried that and the devices appears to be connecting (1st image)

However the 2nd image shows the error when sending the file (Transfer/Download (PC > S4)

I have done this about 50 times over the last 10 years and never had a problem! Am I going mad?

I have a couple of S4s that I havent used for about 18 month, but now need to use!! The device powers up , but I am struggling to connect. I have tried various ports and baud rates, but every time I try and send a file to the device its says "S4 is not connected......." Oddly when I change...