Old version firmware

Hi where could I get old firmware and how do I check what version I have as it’s been given to me by a friend


When you connect it from a GCS something like Mission Planner, look at the messages. When it is connected, vehicle send banner to show version information.

thanks for the reply i do not get any feedback from my PC i downloaded the mission planer plugged the board in green light comes on other light flashes blue then red click on quad chopter to load firmware v4 1,4 official then could not find failed to detect port

Sorry im new to this so trial and error

De-install and re-install mission planner. Something went wrong in the device driver installation.

Thanks I will give it a go will let you know