Hi erol,
You say you are trying to update using a USB stick (in the GPS USB port) and you have done this before. Are you using the same memory stick? If so, did you remember to delete the old update from both your memory stick and your PC or laptop’s ‘Downloads’ folder before you downloaded the new one or copied the new one onto the stick? If not, your PC will have automatically renamed the new file (for example to PilotAware(1).pgp) and the PilotAware update software, looking for a file specifically named ‘PilotAware.pgp’ won’t be able to find it. Note:- depending on your ‘Windows’ settings, the ‘.pgp’ file extension may not be visible. If it isn’t visible DON’T add it!
Hope this helps.
Regards
Peter