I have tried many times to update the firmware since purchased drone. I download, unzip, put on card and put in drones slot, install battery and power up to have nothing happen as if nothing is on card. Firmware is the only thing on card but it is not recognized. Please help.

Hi there. Thank you for reaching out and we're sorry for the trouble. Can you please confirm what specific error message did the app shows? Also, can you please confirm what version are you in right now for the aircraft for us to further isolate the issue? Please keep us posted. Thank you!